one piece card game png Official Card Sleeves Limited Edition Vol. 6 OPCG BOOSTER PACK -THE TIME

It doesnt do much immediately, but it sets up an explosive follow-up, allowing you to storm again or refill your hand

Equip Whenever equipped creature deals combat damage to a player, you may cast an instant or sorcery spell from your hand with mana value less than or equal to that damage without paying its mana cost

Memnite's CMC is also 0, like that of Living End, but since Memnite has a printed mana cost, it may be played from the hand normally, and no mana is spent

While these are definitely more common than the sets Headliner, they still appear in less than 1% of Collector Boosters, and the early prices reflect that