Mark 1, Salvaged Armor

Improvise

When Mark 1 enters, equip it to target creature you control.
When Mark 1 equips to a creature, put a shield counter on that creature.
Whenever equipped creature loses a shield counter, it gains shroud, indestructible, and flying until end of turn.
At the beginning of each endstep, if equipped creature has no shield counters, sacrifice Mark 1.

Equip {5}