mtg whenever an opponent discards a card Sangromancer (J25) #122 Momentum Breaker | Aetherdrift |

Thankfully, while prices for copies of Seeker of Skybreak are up across the board, some printings are slightly cheaper

That's a problem and one that is known to designers

WotC rulings state that Magic cards must be 2.5 inches wide by 3.5 inches tall

While its not guaranteed to work out that neatly every time, theres enough density of discard effects to make mayhem (and the other payoffs like Green Goblin, Revenant) attractive

One of the best shells for it is in Historic

Two Ways to Display CommanderPortable MTG card deck box, featuring a innovative magnetic storage chamber with integrated side-view window, that elegantly displays your commander card