Kaya's Ghostform 
Enchantment — Aura
Enchant creature or planeswalker you control When enchanted permanent dies or is put into exile, return that card to the battlefield under your control.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL