Heart of Kiran

Corazón de Kiran (Heart of Kiran) (es)

Legendary Artifact - Vehicle | Power/Toughness: 4 / 4 (CMC 2)
Flying, vigilance
Crew 3 (Tap any number of creatures you control with total power 3 or more: This Vehicle becomes an artifact creature until end of turn.)
You may remove a loyalty counter from a planeswalker you control rather than pay Heart of Kiran's crew cost.