Old One Eye The elder Tyranid of the crew likes to trample because he's so Colossal
Once on your turn only, you can cast, for its normal cost, a Dragon from your graveyard (it exiles when it dies) which is nice quality over time, and plays into the same Rakdos Dragon Reanimator as Bladewing the Risen
Cloud of Darkness Rarity: Uncommon TYPE: Legendary Creature SUBTYPE: Avatar CMC: 5 Mana cost: USD: $0.57 EUR: 0.75 TIX: 0.08 EDHREC RANK: 16858 (3/3) Flying Particle Beam When Cloud of Darkness enters, target creature an opponent controls gets -X/-X until end of turn, where X is the number of permanent cards in your graveyard
its like your creature has an enters trigger
The likes of Donkey, Penguin, and Child were all silly by the standards of older Magic, but with how wacky a lot of the main sets are now would be relatively tame additions to todays game