Unquestionable Loyalty

Enchanted creature can't attack or block.
If you control enchanted creature, when a
legendary Human enters the battlefield under
your control, sacrifice Unquestionable Loyalty.
You gain 4 life and draw a card. If the legendary
Human is Ricardo, Pigeon Summoner, put a
lifelink counter on it and create a Food token.

"See? This is loyalty."
Ricardo, Pigeon Summoner