Instant-speed lifelink with a cantrip? Pretty good. The fact it costs 3? Pretty bad. Considering there are now cards like Mortal's Ardor and Moment of Heroism, this card has been pretty much outclassed. Still, it does replace itself, so it has that going for it. An okay card, but there are quicker versions of it out there.
Pros: Instant-speed lifelink, cantrip
Cons: Slow at 3 CMC
Note: Sorry about the recent drought of reviews. Work has been nightmarish. Luckily, that will end this week :).