shadow cards mtg of the Enemy (As long as its on the stack Shadow, 107 cards | Magic:

Limited Use lands that dont work forever

Any other clowns with pies

The way challenging works is a ready (untapped) character exerts and chooses an opposing exerted character to challenge, and then both cards compare their strength (attack) and willpower (defense) values to each other (meaning the attacker automatically gets hit back by the defender)

Secret Lair x God of War: Greek Secret Lair x God of War: Greek World at War (27k decks, pack foil $20) Rite of Flame (129k decks!, pack foil $70) Sulfuric Vortex (42k decks, pack foil $40) Pyrohemia (39k decks, pack foil $55) I dont think Ive seen another SL where there were no special versions previously, but here we are