LTR: The Watcher in the Water (Showcase Scrolls) Throne of Eldraine you may put a creature

you may put a creature card with mana value X or less from among those cards onto the battlefield

Reissues include powerful support with Popular Abilities

the Daredevil

1 Rule booklet

LTR: The Watcher in the Water (Showcase Scrolls) Throne of Eldraine you may put a creatureThe Watcher in the Water enters tapped with nine stun counters on it. (If a permanent with a stun counter would become untapped, remove one from it instead.) Whenever you draw a card during an opponent's turn, create a 1 1 blue Tentacle creature token. Whenever a Tentacle you control dies, untap up to one target Kraken and put a stun counter on up to one target nonland permanent.