Yu' Halder, Avenging Berserker

Unblockable, laststrike-(This creature deals
combat damage after other creatures)
If Yu' Halder, Sorrowful Soul is the only
creature on your field he gains haste, +5/+5, loses
unblockable and must be blocked by all creatures
defending player controls and must attack
each combat if able
{t}: Remove a counter from any creature you
control