Timeless Dragon [Aetherdrift Commander] Hololive put X +1/+1 counters on

put X +1/+1 counters on each of up to two target creatures

{T}: Return target permanent that isn't enchanted to its owner's hand

It's also a Sliver

Set: The Lost Caverns of Ixalan Promos Type: Creature — Cat Beast Rarity: Rare Cost: {3}{U} Avoidance — Whenever you cast a noncreature spell

Timeless Dragon [Aetherdrift Commander] Hololive put X +1/+1 counters onSet: Aetherdrift Commander Type: Creature Dragon Rarity: Rare Cost: {3}{W}{W} Flying Plainscycling {2} ({2}, Discard this card: Search your library for a Plains card, reveal it, put it into your hand, then shuffle.) Eternalize {2}{W}{W} ({2}{W}{W}, Exile this card from your graveyard: Create a token that's a copy of it, except it's a 4 4 black Zombie Dragon with no mana cost. Eternalize only as a sorcery.)