Borborygmos

Backup 1, backup 1, backup 1 (When this creature enters, put a +1/+1 counter on target creature. If that's another creature, it gains the following abilities until end of turn. Each backup ability triggers separately.)

Trample

Whenever this creature deals combat damage to a player, put that many +1/+1 counters on it.

Flying

Whenever this creature deals combat damage to a player, it deals that much damage to each creature that player controls.

Trample

Whenever this creature deals combat damage to a player, create a token that's a copy of this creature.

Flying

Whenever this creature deals combat damage to a player, it deals 1 damage to each creature that player controls.

Flying

Whenever a creature you control deals combat damage to a player, create that many Treasure tokens.

Flying

Whenever this creature deals combat damage to a player, roll a d20. When you do, put X +1/+1 counters on each of up to two target creatures, where X is the result.