Right now, while they seem powerful, Kaya, Spirits Justice is unproved, with few brews revolving around them
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Burn spells are ten a penny, and if burn is your win con, any number of the options out there will do just fine
If you don't control an Army, create a 0/0 black Orc Army creature token first.) Creature tokens you control have deathtouch
Creature Elf Artificer Fabricate 2 (When this creature enters the battlefield, put two +1/+1 counters on it or create two 1/1 colorless Servo artifact creature tokens.) Whenever Cultivator of Blades attacks, you may have other attacking creatures get +X/+X until end of turn, where X is Cultivator of Blades's power
Lots of first strike