100 pack card sleeves Epic Spell Wars: of DOOM (100-pack) 1/2 x 3 Blue Summit Supplies Baseball Card

Do you want to keep discarding your hand to fill your graveyard for combo potential, with something like Underworld Breach

CR COLLECTOR'S RARE UR Ultra Rare Chaos Valkyria X LIGHT Level 4 [ FairyEffect ] ATK 1800 DEF 1050 Cannot be Normal Summoned/Set

While limited by only being able to activate a single effect of the card once per turn, preventing any shenanigans by activating the card in succession, it's still a powerful card that could see the occasional inclusion in Side Decks for countering decks like Snake Eyes or Fire King

However, one Ancient Pokmon is the foundation of a Rogue strategy that has come to be known by players as "Ancient Toolbox"