Celes, Rune Knight On ETB, Celes, Rune Knight lets you pitch any number of cards, then draw that many plus one, and it pumps your whole team with +1/+1 counters when creatures enter from the graveyard
The ETB effect only works on permanents that aren't two colors, while the effect on the artifact creature on the back face rewards you for playing two-color cards
A 4/4 for five mana, upon entering the battlefield, Ulrich provides target creature with +4/+4 until the end of turn
You'll need to have a consistent way to get more lands into your hand with other ramp effects to keep making use of her ability, but even without that, Azusa can catapult you ahead of your opponents in a single turn
Saryth, the Vipers Fang gives Hexproof, as well as Sylvan Safekeeper that can consistently sacrifice Lands to protect Selvala