Companion Krasis

Whenever you cast a creature spell, you may
pay {u}{1}. If you do, draw a card.
Whenever you cast an instant or sorcery
spell, you may pay {g}{1}. If you do, target creature gets +2/+2 until end of turn.
"It remembers appointments, handles proofreading, and the pods on its back keep hot
food hot and cold food cold."
—Nick Smith, Simic interguild liason