Genghis Frog | Quina, Qu Gourmet

Cards

({G} magic symbol) ({U} magic symbol) plus commander tax if applicable available.

Cast
Genghis Frog either from your hand or from the command zone by paying ({G} magic symbol) ({U} magic symbol) plus commander tax if applicable.
When
Genghis Frog enters, it triggers, creating a Mutagen token and a creature token due to
Quina.
When the creature token enters as a Mutant due to
Maskwood Nexus,
Genghis Frog triggers, creating a Mutagen token and a creature token due to
Quina.
Repeat step 3.

Step 3 creates a mandatory infinite loop that will cause the game to end in a draw if it isn't interacted with.