Frogslicer dual wielding

Substitoad

You will need a Substitoad or a way to access it in hand.

Fishborg Blaster

You will need a Fishborg Blaster or a way to get it in grave.

Extenders

The minimum requirements are a Substitoad and another monster in play, preferably Fishborg Blaster. If you don't have Fishborg then you need to find a way to dig for it. Using any extender with Poison Draw Frog and Swap Frog are how you can hope to draw into the Fishborg. Once you have Substitoad and Fishborg Blaster you use Extenders to generate card advantage with Level Eater.

Example Hand

This is the most straight forward hand you will have for full combo. One Substitoad, one way to get Fishborg in grave, and one Symbol of Heritage. There are more complex hands that are full combo without Symbol of Heritage that I won't be showing here. I'll be using Upstart Goblin as generic placeholder cards throughout this explanation.

Summon Substitoad and Special Summon Swap Frog putting Fishborg Blaster in Grave.

Thin your deck of all frogs, except one Poison Draw Frog, ending on Des Frog.

You can float a frog extra normal summon by bouncing Swap Frog to hand and discarding it to Fishborg Blaster before sending all frogs from Deck to Grave.

Summon Fishborg Blaster

Summon Brionac. Tribute away Substitoad for Poison Draw Frog.

Play Symbol of Heritage summoning Swap Frog from Grave.

Send Poison Draw Frog to Grave with Swap Frog's effect, drawing a card.

This is a repeatable draw loop. Discard a card to bounce Symbol of Heritage to hand with Brionac. Play Symbol summoning Poison Draw Frog from Grave. Bounce Swap Frog with it's own effect and discard it to bounce Symbol again. Play Symbol summoning Swap Frog to finish the loop.

Continue the draw loop making sure you benefit from the +1's of either Salvage or Pot of Avarice.

There's no need to be conservative with the Salvages but if possible try to save the Pot of Avarices for later.

Continue the draw loop until you have Exodius and Level Eater.

Foolish or One for One can be used for Level Eater if you've already generated enough card advantage. Be sure to save either a Giant Trunade or a Heavy Storm while drawing through your deck for the next turn when you'll be able to attack.

Summon Level Eater reducing Brionac's level to 5.

Sometimes it is necessary to reduce Brionac's level again to 4 but try to avoid this if possible for later steps of the combo.

Discard a card to summon Fishborg and play Symbol of Heritage summoning Substitoad.

Bounce Swap Frog and discard it to return Symbol of Heritage.

Summon Exodius returning all monsters from Grave to Deck.

It is important that Level Eater is either in play or in hand at this step and at least one Fishborg is summoned from the Grave.

Tribute Fishborg summoning Swap from Deck

Bounce Level Eater with Swap Frog's Effect.

Tribute Swap for Dupe Frog and discard Level Eater to summon Fishborg from Grave.

Tribute Fishborg for Swap sending Dupe Frog to Grave and adding a Treeborn or Unifrog to Hand. Summon Level Eater making Exodius lvl 9.

This is how you generate card advantage. Churning Swap Frogs and using each one's bounce effect on a Level Eater. It is important to have either a Dupe Frog or a Poison Draw Frog to maintain card advantage with Swap Frog's trigger ability to send either monster to Grave.

Again, Tribute Swap for Dupe and discard Level Eater to summon Fishborg from Grave.

This will be repeated with Poison Draw Frogs.

Again, Tribute Fishborg for Swap sending Dupe to Grave and adding the remaining Treeborn or Unifrog to Hand. Summon Level Eater making Exodius lvl 8. Bounce Level Eater to Hand.

Tribute Swap one last time summoning Poison Draw Frog from Deck. Symbol of Heritage summons Swap Frog.

All three Swap Frogs are accounted for now so you'll be using Symbol of Heritage for the most part now.

Send Poison Draw Frog, drawing a card.

It doesn't matter what you draw, some cards like Pot of Avarace can be very beneficial while drawing a Poison Draw Frog forces you to skip a Level Eater +1.

Summon Level Eater making Exodius lvl 7. Bounce it to Hand with Swap Frog's Effect.

Tribute Swap for Poison Draw. Symbol of Heritage summons Swap Frog.

Send Poison Draw Frog, drawing a card. Summon Level Eater making Exodius lvl 6. Bounce Level Eater with Swap Frog's Effect.

Again, Tribute Swap for Poison Draw. Symbol of Heritage summons Swap Frog.

Send Poison Draw Frog, drawing a card. Summon Des Frog and Fishborg Blaster

If none of your draws were Des Frog, discard both Treeborn and Unifrog. One for Symbol of Heritage with Brionac's effect and the other to summon Fishborg. Tribute Exodius for Des Frog. If you drew Des Frog either make Stardust later or tribute summon it with the frog extra normal summon you saved from earlier.

Synchro into Stardust Dragon.

Symbol of Heritage summons Poison Draw Frog.

Discard anything to Bounce Symbol of Heritage. Symbol of Heritage summons Swap Frog.

Send Poison Draw Frog to Grave with Swap Frog's effect, drawing a card.

This is the repeatable draw loop. Repeat this until you draw a Pot of Avarice.

Play Pot of Avarice targeting Poison Draw Frog x3 and Dupe Frog x2. Discard Level Eater to Bounce Symbol of Heritage with Brionac's effect.

You are sending back these frogs because they are the placeholder frogs you need to get Level Eater +1's. Drawing them doesn't matter, it only limits the Level Eater plusses from this cycle.

Summon Level Eater making Stardust lvl 7.

Bounce Level Eater with Swap Frog's effect. Tribute Swap for Dupe Frog. Symbol of Heritage summons Swap.

Swap sends Dupe to Grave adding a Treeborn or Unifrog to Hand

Discard Level Eater to bounce Symbol of Heritage with Brionac's effect. Summon Level Eater making Stardust lvl 6.

Again, Bounce Level Eater with Swap Frog's effect. Tribute Swap for Dupe Frog. Symbol of Heritage summons Swap.

Again, Swap sends Dupe to Grave adding a Treeborn or Unifrog to Hand

Discard Level Eater to bounce Symbol of Heritage with Brionac's effect. Summon Level Eater making Stardust lvl 5.

Bounce Level Eater with Swap Frog's effect. Tribute Swap for Poison Draw Frog. Symbol of Heritage summons Swap.

Send Poison Draw Frog to Grave with Swap's effect, drawing a card. Discard Level Eater to bounce Symbol of Heritage with Brionac's effect. Summon Level Eater making Stardust lvl 4.

Again, Bounce Level Eater with Swap Frog's effect. Tribute Swap for Poison Draw Frog. Symbol of Heritage summons Swap.

Discard either Treeborn or Unifrog to bounce Symbol of Heritage with Brionac's effect. Tribute Swap Frog for the last Poison Draw Frog in Deck.

Symbol of Heritage summons Swap. Send Poison Draw Frog to Grave with Swap's effect, drawing a card. Discard either Treeborn or Unifrog to bounce Symbol of Heritage with Brionac's effect.

Discard a non-Level Eater non-Extender to summon Fishborg Blaster.

Synchro into the second Stardust.

This is the beginning of a branching decision tree.

Branching Decision #1. Play Pot of Avarice putting back at least 2 Swap Frogs, Brionac, and both Dupe Frogs.

If you draw a Swap or a Dupe you may want to summon Exodius as well after depending on the game state.

Branching Decision #2. Discard to summon Fishborg and summon Exodius, sending all monsters from Grave back into Deck.

This is the most typical set up but if you can attempt the Pot of Avarice route it may be worth while. This step is why we are careful not to discard Level Eater when we are done using it for card advantage for the turn.

Finally, achieve stable board by tributing Fishborg and Exodius for both Dupe Frogs for Dupe Lock.

Be sure to save either Giant Trunade or Heavy Storm for the follow up turn. The more extenders you can save the better if they manage to break your board. Be sure to have access to Substitoad as well if they completely break your stable board.