Elbrus, the Binding Blade // Withengar Unbound

Elbrus, the Binding Blade

Equipped creature gets +1/+0.
When equipped creature deals combat damage to a player, unattach Elbrus, then transform it.
Equip

Those who grasp its hilt soon hear the demon's call.

Withengar Unbound

Flying, intimidate, trample (A creature with intimidate can't be blocked except by artifact creatures and/or creatures that share a color with it.)
Whenever a player loses the game, put thirteen +1/+1 counters on Withengar Unbound.

There are not enough lives on Innistrad to satisfy his thirst for retribution.