Railgun

Equip {2}
Equipped creature gets +2/+1
{1}{t} Unsafe mode: Equipped creature gets +5/+1 instead of +2/+1 for one turn but you need to roll a six sided dice. 1 or 2 the creatue goes into yor graveyard and it deals no damage, 3, 4, 5, 6 the creature survives.