Garbage Elemental (3/1 Creature) [Unstable] Cat Monk each player returns each creature

each player returns each creature card from their graveyard to the battlefield

you may pay {B} and exile it with four time counters on it

"Those who wish to invade our monastery

Set: Ixalan Type: Creature — Dinosaur Rarity: Common Cost: {4}{G} Spike-Tailed Ceratops can block an additional creature each combat

Set: Fallen Empires Type: Creature — Human Soldier Rarity: Rare Cost: {W}{W} {1}{W}: Target Soldier creature gets +1/+0 until end of turn

Garbage Elemental (3/1 Creature) [Unstable] Cat Monk each player returns each creatureSet: Unstable Type: Creature Elemental Rigger Rarity: Uncommon Cost: {4}{R} When Garbage Elemental enters the battlefield, it assembles a Contraption. (Put the top card of your Contraption deck face up onto one of your sprockets.) Undying (When this creature dies, if it had no +1 +1 counters on it, return it to the battlefield under its owner's control with a +1 +1 counter on it.)