Knowledge Vault [Legends] Pro Tour Promos double the number of +1/+1

double the number of +1/+1 counters on Primordial Hydra

Set: Legends Type: Creature — Sphinx Rare Cost: {2}{W}{W}{W} {T}: Target player chooses a card name

) When Cao Ren

"You may even see them again

) Other Zombies have "{B}: Regenerate this permanent

Knowledge Vault [Legends] Pro Tour Promos double the number of +1/+1Set: Legends Type: Artifact Rare Cost: {4} {2}, {T}: Exile the top card of your library face down. {0}: Sacrifice Knowledge Vault. If you do, discard your hand, then put all cards exiled with Knowledge Vault into their owner's hand. When Knowledge Vault leaves the battlefield, put all cards exiled with Knowledge Vault into their owner's graveyard.