Sacrificial Totem

when this card is placed on the battlefield, flip a coin. If heads, sacrifice a creature.
If tails, attach it to target creature you control
equipped creature has "whenever this creature attacks,
flip a coin. If heads, place a -1/-1 counter on it. If tails, place a +1/+1 counter on it. If this creature dies, exile
it and create a 1/1 black totem creature token."
{3}: equip to target creature you control