Zaldros, Scourge of Asphodel

Flanking, Wither, First Strike
Other creatures with Flanking you control get +1/+0 and gain Wither.
Other creatures with Wither you control get +1/+0 and gain Flanking.
{2}{w}: Target creature must block this turn if able.
Zaldros, Scourge of Asphodel cannot be blocked by more than one creature.