mtg eldritch moon card list full cardlist : r/magicduels Magic the Gathering Adventures: Eldritch

Since the enters ability can target a permanent controlled by each opponent, it scales well in Commander

Or getting an extra copy of Koma, Cosmos Serpent

Again, it's not card advantage in and of itself (since you draw three, and then discard three + lose the Coliseum), but it combines famously with Deep Analysis and madness cards (such as Circular Logic), and its effect can't be counterspelled

Akoum BattlesingerAkoum Battlesinger is more efficient than it appears at first glance, coming down as a 2/1 with haste for two, and I've routinely seen it give the Ally player's team +10/+0 when they're having a turn

Her ability, Support, allows players to add her Strength stat to another chosen character's strength when she goes questing