Z'yk, Fiend Lord

Sacrifice a creature: Regenerate Z'yk, Fiend Lord.
When Z'yk, Fiend Lord enters the battlefield,
choose one —
• Skeletons and Nightstalkers you control gain intimidate until end of turn.
• Skeletons and Nightstalkers you control gain
first strike until your next turn.
• Skeleton creatures you control get +1/+1 for
each Nightstalker you control and vice versa
until end of turn.