Attacking Aimlessly

{r} Target opponent picks a card at random from
your hand and reveals it. If the card is a creature,
put it into play. If it is a non-creature, roll a dice.
On a 5 or 6, discard it from your hand.
That creature is unaffected by summoning
sickness. If the creature is not a wall,
at the end of turn, sacrifice the creature.