Vow of Duty [Explorers of Ixalan]

Set: Explorers of Ixalan Type: Enchantment — Aura Uncommon Cost: {2}{W} Enchant creature Enchanted creature gets +2/+2, has vigilance, and can't attack you or a planeswalker you control. "I prefer loyalty to be a matter of respect, not of magic. But one does what one must." —Kaalia of the Vast