lifegain card draw mtg Mister Negative (Commander) - The Great EDH Challenge: White

#5 The problem with tribal is the incentive cards suck unless a good part of your deck supports that tribe, and picking cards that supports that tribe usually means you have to ship better cards

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Their trigger reads, Whenever a land enters the battlefield under your control, you may gain control of target creature for as long as you control Roil Elemental. So, basically, as long as you can keep Roil Elemental alive, you can absolutely steal every other Creature on the battlefield

Sign in Blood can also become an expensive Shock to close the game out