Along with Voltaic Float giving it flexibility for an easy retreat, Zapdos Multishot Lightning attack gives it the capability to shred through your opponents benched Pokmon as well as those active
Pyroclasm and Fire Magic are less powerful than they might initially appear, but do have a place at killing Pawpatch Recruit
While weaker than most other good cube ramp creatures at ramping in the early game Rishkar has some outstanding late game scaling and synergy as a ramp card
Sarkhan Vol Sarkhan is the weakest of the set's planeswalkers, but honestly he's still a pretty great one
They enter the battlefield tapped and bounce another land, negating any ramp theyd do (barring shenanigans like [casthaven]Voyaging Satyr[/casthaven] and [casthaven]Amulet of Vigor[/casthaven])
Getting eight cards is huge, and often youll get something back, which is the usual downside of spending a card just to mill someone