In a Standard setting without access to free spells, your opponent is still put to the test of whether they can kill it on sight
Magic the Gathering: Final Fantasy Prerelease Welcome, Warriors of Light
It was actually downgraded from a rare into a common, which is both a sign of how it is not very playable and how the mechanic has become ubiquitous enough to be at common
But this cannot be stopped, so it's a win con on the second turn, quite powerful to get down prior to Counterspell coming online if you went first, and then a force of nature
Once per turn, you may turn a card with an inkwell symbol from your hand into face-down ink, becoming a resource that you can turn sideways to summon characters You use 60-card decks in Constructed, 40-card decks in Limited, and the official website has an excellent "how to play" section
But there were rules