mtg prosper commander deck Tome Bound Deathtouch.Mystic Arcanum At the beginning of your end step MTG EDH Commander Prosper, Tome-Bound

Constellation triggers are always going to be extra-valuable with a deck that can cheat enchantments in for free or create enchantment tokens, and the payoff here is very potent for just a two-mana setup cost

Whenever you cast a noncreature spell, choose one Exile another target creature you control

Of course, the really exciting part here is the ability to double your mana from creature sources

More mana, massive creatures, and bigger turns

Its when the bad guys get their hands on it

(You descended if a permanent card was put into your graveyard from anywhere.) Legendary Artifact The Aetherspark As long as The Aetherspark is attached to a creature, The Aetherspark can't be attacked and has "Whenever equipped creature deals combat damage during your turn, put that many loyalty counters on The Aetherspark." +1: Attach The Aetherspark to up to one target creature you control