Mutate {5}{U} Whenever this creature mutates, tap up to X target creatures, where X is the number of times this creature has mutated. Those creatures don't untap during their controller's next untap step.
Mutate {5}{G} Whenever this creature mutates, exile cards from the top of your library until you exile X permanent cards, where X is the number of times this creature has mutated. Put those permanent cards onto the battlefield.
Mutate {3}{R} Flying Whenever this creature mutates, create a red artifact token named Feather with "{1}, Sacrifice this token: Return target Phoenix card from your graveyard to the battlefield tapped."
Mutate {2}{W} Whenever this creature mutates, other creatures you control get +X/+X until end of turn, where X is the number of times this creature has mutated.
Mutate {3}{R/G}{U}{U} Flying, trample Whenever this creature mutates, exile cards from the top of your library until you exile a nonland permanent card. Put that card onto the battlefield or into your hand.
Mutate {2}{B} Deathtouch Whenever this creature mutates, each opponent loses X life and you gain X life, where X is the number of times this creature has mutated.
Mutate {4}{B} Flying Whenever this creature mutates, exile the top card of each opponent's library face down. You may look at and play those cards for as long as they remain exiled.
Mutate {4}{G/W}{B}{B} Deathtouch, lifelink Whenever this creature mutates, return any number of target creature cards with total power 10 or less from your graveyard to the battlefield.
Mutate {1}{B}{G}{U} Trample Whenever this creature deals combat damage to a player, return target creature card with mutate from your graveyard to your hand.
Mutate {G}{U} {1}, {T}: Look at the top card of your library. If it's a land card, you may put it onto the battlefield. If you don't put the card onto the battlefield, put it into your hand.