Panther Savageclaw

Deathtouch
Tempest 3 (When you cast this spell, you get 3 storm counters. At the beginning of your end step, you lose
all storm counters.)
When Panther Savageclaw enters the battlefield,
you may pay any number of storm counters. Each opponent loses life equal to the number of storm counters payed this way. Then, you gain that
much life.