Its a fantastic spell that gives a one-off Sun Titan effect, twice
If the enlisted creature is killed in response to the trigger, the creature with Enlist still gets the bonus based on what the enlisted creatures power was as it last existed on the battlefield
Your traditional green stompy decks dont have much use for this one, but if youre playing with +1/+1 counters, Auras, or trying a GW or Sultai-style Equipment deck with creatures like Ukkima, Stalking Shadow or Nazahn, Master Blacksmith, youll definitely want to include this one in your decks
On the other hand, in three-, four-, or five-color decks, playing any non-basic land that only taps for a single color of mana is a big cost