Obviously Mana Leak hits more targets than Spell Pierce, which has Negate restrictions on it, they are not directly comparable cards
Urza, Chief Artificer Urza, Chief Artificer can overtake a game with just a few turns
Jenna had constructed a solid understanding of the mechanics employed by Xenagos to propel the mortal creature into Nyx
As with the first one, this set has a ton of amazing card for kitchen table play, it's really Commander heavy, but there are also great cards for Type Four, multiplayer, Five Color, and general Highlander that will make my list as well
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This helps to set up Asmoranomardicadaistinaculdacars surprisingly potent removal effect, which one can only imagine involves force-feeding opposing creatures to death, and can even bring her back later on if need be