tiny mtg cards World’s Smallest Magic The Gathering Ajani vs. Nicol Bolas Series 2 The Gathering ALL 6 Duel Decks Worlds

Their magical honey abilities allow players to tuck cards directly from their hand into their inkwell face-down, accelerating the resource pool at a breakneck pace

But it has a bonus twist: it only costs three mana if you target a tapped creature, ie a creature thats already attacked you

Dracogenesis (Showcase, Halo Foil) - $150 The showcase, halo foil version of Dracogenesis (with other versions at number 13 and 18) is currently at $150

If you were playing fair, there was no way you could compete with that if the deck pulled it off and many games were won simply due to a willingness to play a card this powerful, allowing such decks to win long games they would otherwise be lost in