Klangor, the Ruthless

Haste, Trample
As long as it's your turn, creatures you control
that must attack if able have first strike.
Other Berserker creatures you control get +X/+0,
where X is 1 plus the number of opponents who
have lost life this turn.
{2}{b}: Klangor, the Ruthless deals 1 damage to
target opponent.