Teddiursa, Curious Moonbear

Vigilance, First Strike
When Teddiursa, Curious Moonbear enters the
battlefield, each player searches their library
for a basic land and puts it on the battlefield
Landfall: Gain life equal to the number of lands
you control, then distribute that many +1/+1 counters to any amount of creatures you control.
Rest {g/w}: Regenerate Teddiursa and tap it. Put a
stun counter on Teddiursa.