WUBRG
Sorcery
destroy all creatures. They can't be regenerated.
--The beautiful stew can envy a snake
– Folk Song (Trad.) (not the Urza's Saga one)

---

BBBB
Sorcery
you put a 1/2 black Zombie creature token onto the battlefield for each card in your graveyard

---

3WWW
Legendary Creature - Bird Cleric (2/3)
Flying
At the beginning of each opponent's combat phase, target multicoloured permanent is white until end of turn and regenerate that permanent
~this~ can block an additional creature

---

AlexChurchill/MagicCardGenerator