Slagburst Titan

Trample
Slagburst Titan enters the battlefield with 3
stone counters on It. It has defender as long as it
has a stone counter. When Slagburst Titan takes
damage from a creature, remove a stone counter,
It deals 3 damage to that creatures controller.
When Slagburst Titan dies. Add {r} to your mana
pool, this mana does not empty as steps and
phases end.