xithra encasing armor

equip {r} (Attach this permanent to target
creature you control. Activate this ability only
any time you could cast a sorcery).
equipped creature gets +0/+2.
when this card enters the battlefield choose one:
• summon a 2/2 red xithra creature token and
equip this card onto that creature for {0}.
• deal 2 damage to target creature or player.