Leif, the Wildsoul

Lifelink
Leif, the Wildsoul has Indestructible as long as you control 3 or more wolf creatures.
Pack Tactics—When Leif, the Wildsoul attacks, if you attacked with creatures with total power 6 or greater this combat, you make put a Wolf creature card from your hand onto the battlefield tapped and attacking.
It gains Lifelink until the end of turn.