U
Artifact Creature - Myr (1/1)
RG: two target Myr get -1/+1 until end of turn and those creatures get -4/+4 (This effect doesn't end)

---

WUBRG
Artifact - Equipment
Equip G
Whenever equipped creature leaves the battlefield, draw two cards
--His jellyfish is greater than even the confused sack
– Ouglono Oasheenane, Merchant Hermit

---

2RRR
Creature - Dragon (1/1)
Flying
Sacrifice a land: put a improbability counter on target creature
Each creature with a improbability counter on it gains ''Whenever a land enters the battlefield, target opponent may Pay 4 life. If that player does, attach target Aura to target creature. (Control of that Aura doesn't change.) and return that Aura to its owner's hand''

---

AlexChurchill/MagicCardGenerator