Each instant and sorcery spell you cast has casualty 1. (As you cast that spell, you may sacrifice a creature with power 1 or greater. When you do, copy the spell and you may choose new targets for the copy.)
Cast a powerful spellslinger/aristocrats hybrid where every instant and sorcery you cast can be copied by sacrificing a creature, then refilling on tokens. You sequence cheap creatures and token-makers as casualty fuel, doubling removal, drain, and draw spells to grind opponents out while attacking with a 4/4 flier. Win by chaining copied life-drain and burn or by going wide with sacrifice-and-recur loops.
Free spell-copy engine on every instant/sorcery with no mana cost
Evasive vigilant body that pressures and blocks at the same time
Excellent in BW aristocrats shells that already produce sac fodder
Doubles high-impact spells like removal, tutors, and drain effects
Needs a steady creature supply or casualty does nothing
Sacrificing creatures can be card-disadvantageous without payoff
Spell-light hands leave the engine idle
BW lacks ramp and direct card advantage compared to other pairs