whenever an opponent discards a card mtg Megrim Tenth Edition Regular Uncommon How to Build a Discard

Beast, Hardheaded provides one solution, allowing you to use its Break ability to banish an item of your choice when he enters play

Id love to go through one three-month period without having to consider what cards are bannable, or which mechanics are going to need changing

Sarpadian Simulacrum

Nexus of Fate has a replacement effect which causes it to go to your library rather than your graveyard, so you never deck yourself if you can cast it every turn (unless something else causes you to draw)

These little guys are so fun and it was such a charming encounter, we thought they would be a nice little surprise to see in the set