Mutate turns two or more creature cards into one permanent, merging their abilities, and usually granting a special benefit when you do so - but the specific wording of the rules generates many edge cases you need to be aware of
Creature - Wall Color tag templates(None) Gate Colossus Affinity for Gates (This spell costs less to cast for each Gate you control.) This creature can't be blocked by creatures with power 2 or less
This will be a negative for decks with payoffs that specifically want you to draw cards, but on the other hand your foes won't be able to target your draws
That said, we don't run many haste enablers so this build leans towards burn damage
Some of them feel a bit too cheat-y for my taste, so I dont really use them, but I know some of you dont mind
You can also cast any creature spells you mill with Terra