Oslac, Ancient Mystic

As you cast Oslac, you may pay an additional {u}{g}. If you do, it gains Splendid 4. (This creature enters the battlefield with 4 +1/+1 counters on it.
Whenever you draw a card, you may move a +1/+1 counter from it onto another creature you control.)
Acknowledge (You may have this creature enter the battlefield tapped. If you do, put a +1/+1 counter on a legendary creature.)
{u}{g}: Draw a card.