tcg card sleeves Rock Guard 110 | Rough Textured MTG Sleeves totaling 500 sleeves Japanese Matte Card Sleeves

Lets see how this mechanic ticks

Once per Chain, if a "Genex" monster(s) is added to your hand, except by drawing it, you can: Immediately after this effect resolves, Normal Summon 1 "Genex" monster, also you cannot Special Summon monsters from the Extra Deck for the rest of this turn, except by Synchro Summon using a "Genex" Tuner as material

This is usually reserved for baby Pokemon and, despite their size and lack of effort to set up, these babies can be menaces for any deck

Curse of Opulence is a close second

It even threatens quick, commander-damage based wins if you pair its insane power boost with cards like Temur Battle Rage and Berserk