mtg deck card limit Magic The Gathering Cast powerful spells Limit Break Commander Deck FULL

A 3/3 demon for five mana, Ob Nixilis has a potent landfall trigger, causing target opponent to lose three life and for three +1/+1 counters to be put on Ob Nixilis whenever a land enters the battlefield under its owner's control

Spark Double Spark Double plays into strategies that deal with copies and counters, but its four mana value really makes it accessible in a lot of strategies

Silverquill Influence (White/Black) Aura control, make foes fight each other A blend of Goad and Enchanments, Killian, Decisive Mentor gets your opponents fighting each other while helping himself to more cards as your Aura creatures attack

You gain 1 life for each permanent destroyed this way

The difference between the two of them comes down to each formats respective Banned & Restricted list

Argothian Enchantresss shroud is nice, but not better than a payoff that enables your other payoffs