Kai, Preventative Healer

First strike, lifelink.
Whenever Kai, Preventive Healer deals damage to
a creature or player, place a charge counter
on Kai, Preventative Healer.
Remove a charge counter: choose one;
• Kai, Preventive Healer gains trample.
• Kai, preventative healer becomes unlockable.
•Kai, Preventive Healer gains deathtouch.
"It's better if they aren't hurt in the first place"