Tina, Boom-master

Whenever an artifact you control would deal
noncombat damage to a player or permanent,
you may instead have it deal that much damage
to you and twice that much damage to that player
or permanent.
{2}{r}: Create a Bomb token.
(It's an artifact with "This enters the battlefield
tapped." and "{1}, {t}: Sacrifice this artifact:
It deals 2 damage to any target.")