Runic Breastplate

Equipped creature gets +1/+2 and has Hexproof. If an opponent controls 5 or more creatures, equipped creature gets an additional +1/+2 and also has Defender and Steadfast (ignores effects that say "can't be blocked").
At the beginning of your upkeep, pay {2} or unequip Runic Breastplate. If Runic Breastplate is unequipped this way, it can't be equipped again until your next turn.
Equip {3}