Mizzium Mortars, Starstorm, Chain Reaction, Evacuation, Displacement Wave, Blasphemous Act, Coastal Breach Board Wipes
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Then of course there's Spider SpawningSpider Spawning, an excellent way to rebuild an army after a battlefield sweeper
Obviously Mana Leak hits more targets than Spell Pierce, which has Negate restrictions on it, they are not directly comparable cards
While you can ramp in the form of creatures like Elvish Mystic or Devoted Druid, most decks benefit from mana rocksartifacts that help tap for manabecause theyre harder to remove and easier to cast
Reminisce Sorcery Target player shuffles their graveyard into their library