Anafenza, Kin-Tree Spirit bolsters onto your persisting creature as long as it has the least toughness when it arrives, which is easy given the smaller size of the better ones
The first set this mechanic appeared in was Future Sight in 2007, on Tombstalker, Logic Knot, and Death Rattle
PlayEDH interviewed Brian BoshNRoll Coval in our latest podcast if you're looking for something to listen to while sorting your cards
Simian Spirit Guide Simian Spirit Guide is the red version of a fast mana spell: Exile it from your hand to add 1 red mana
It pairs beautifully with cards like Divine Visitation and Wedding Announcement, and the warp ability lets you sneak it into key turns, such as when youre about to sink mana into White Sun's Zenith
For the beautifully low price of a single green mana, this aura provides stat buffs which are oh-so-easy to scale up