Whether he serves as your Commander or another card in your Assassin deck, this is a slam-dunk inclusion for Assassin players
To this point, most enchantress decks also required something that prevented your opponent from attacking into your tiny creatures (like a Ghostly Prison or a Sphere of Safety), but Setessan Champion does that on his own
That means you cant attack with it or activate mana abilities
Nobody wants me to do that," he jokes
(2024-09-20) If your opponent discards a card while you control Leyline of the Void, abilities that check whether a card is discarded (such as Hollow One, or a madness ability of the discarded card) still work, even though that card never reaches that player's graveyard
Now that we have an understanding of formats, lets go over the difference between Constructed and Limited