Land
T: add 1 to your mana pool
Sacrifice ~this~, Tap an untapped green permanent you control, T: add one mana of any colour to your mana pool
At the beginning of each player's upkeep, you may pay X, where X is the number of basic land types among lands an opponent controls. If you do, ~this~ deals 3 damage to target creature or player
blue creature spells cost any player up to 3 less to cast
--Her cannon made of fireman is greater than the mightiest lawyer
– Eadrok Shell, Sharp Traitor
UU
Instant
up to two target white creatures gain ''When ~this~ is returned to its owner's hand, target opponent may pay 3UU. If that player does, untap target Forest'' until end of turn
--Humanity grounds the mightiest goose and fades better than the kiss
– Traditional
3RR
Creature - Goblin Rogue (3/1)
At the beginning of your upkeep, target opponent may pay 3. If that player doesn't, ~this~ deals 1 damage to target creature for each card in your graveyard. This damage can't be prevented and that creature can't be blocked by more than one creature until end of turn
--The most skilled pencil may minimise a single feast
– Ansaske Leachia Wisefist
AlexChurchill/MagicCardGenerator