Just one draconic attack will generate enough mana to recast a commander like The Ur-Dragon or pay for a massive X spell, such as Torment of Hailfire
With any combo you can assemble that involves sacrificing a creature an infinite number of times, Sephiroth can then serve as your win condition
As a sorcery, you may pay the mana cost of a locked door to unlock it.) Rootwise Survivor Rarity: Uncommon TYPE: Creature SUBTYPE: Human Survivor CMC: 5 Mana cost: USD: $0.05 EUR: 0.05 TIX: 0.05 EDHREC RANK: 22784 (3/4) Haste Survival At the beginning of your second main phase, if this creature is tapped, put three +1/+1 counters on up to one target land you control
It was justified due to value lands like Wasteland, Dark Depths, and Thespians Stage, plus the presence of Fastbond
I'm going to pull back a bit and talk about why the core sets are returning and how they're going to be similar and different from core sets of old
However, one specific deck rises above the rest