name: Clement, the Worrywort
printings: BLB, PBLB
text: Vigilance\nWhenever Clement, the Worrywort or another creature you control enters, return up to one target creature you control with lesser mana value to its owner's hand.\nFrogs you control have "{T}: Add {G} or {U}. Spend this mana only to cast a creature spell."