Land
T: add 2 to your mana pool
4, Discard a sorcery card: all multicoloured creatures get +3/+0 until end of turn


WU
Creature - Merfolk Rogue (1/3)
Tap an untapped creature you control, Sacrifice a legendary creature: you may tap or untap any number of target permanents
Discard a instant card: attach target Aura to target Merfolk. Gain control of that Aura until end of turn
Pay 3 life, T: until end of turn, if ~this~ would be put into a graveyard from the battlefield, exile it instead
Sacrifice a tapped nonbasic land: put a 1/1 blue Bird creature token with flying onto the battlefield
Sacrifice two Birds: two target creatures with power 1 or less gain Exalted until end of turn
At the beginning of each opponent's upkeep, You and target opponent each untap and gain control of target Merfolk the other controls until end of turn. and ~this~ can't be blocked except by white creatures until end of turn
flying


3
Legendary Creature - Beast (2/3)
Whenever a land is returned to its owner's hand, target player may pay 2RRG. If that player does, target player puts two 3/1 red Elemental creature tokens onto the battlefield
All creatures with power 2 gain ''When ~this~ is put into a graveyard from the battlefield, you may Pay 1 life. If you don't, clash with an opponent. If you win, destroy target artifact. It can't be regenerated.''
All lands gain ''Whenever a land leaves the battlefield, target player may pay RRR. If that player doesn't, put a speed counter on target land'' and ''RR: untap target artifact with a speed counter on it and gain control of it until end of turn. ''
Sacrifice a Swamp: destroy target artifact. It can't be regenerated.
Whenever ~this~ enters the battlefield, add G to your mana pool for each creature on the battlefield
If ~this~ would deal damage to a creature, any player may pay 3R. If a player doesn't, instead ~this~ deals 3 damage to that creature. Creatures damaged this way can't be regenerated this turn. When a creature damaged this way is put into a graveyard from the battlefield this turn, return it to the battlefield under your control
All enchantments gain ''4R: ~this~ can't be blocked by more than one creature until end of turn''

AlexChurchill/MagicCardGenerator