frank horrigan mtg card Agent | Cryptic Trilobite MTG Agent Frank Horrigan SURGE

It's key to note that a mana ability doesn't use the stack

At its worst, you can use Nykthos to tap to for one colorless mana

Pollywog Prodigy Pollywog Prodigy has a powerful payoff for evolve and a lot of reasons to trigger

I understand that you need to run four colors to pull this off, and Im not sure if Standard has either the manabase or the cantrips to try to move in on that approach, but Modern should easily have all the necessary tools available (not really considering it for Legacy as combo decks have a much higher bar to climb there, what with Tendrils of Agony and Show and Tell alive and kicking)

All this sacrificing means youll also probably want some Recursion, too, so consider adding cards like Black/Green cards that will help you get things back from your Graveyard such as Phyrexian Reclamation, Greenwarden of Murasa, Reclaim, Regrowth or Skeleton Shard