All for Nothing Coin

This strange coin is a priceless artefact that has interdimensional properties. within the property of a PC, the player can use a coin flip to replace any d20 roll he wants before rolling. If it is heads, the player has rolled the equivalent of a natural 20 and attacks may crit. If it is tails, the player has rolled the equivalent of a natural 1 and fumbles. If on the slim chance the coin lands on its side, the PC that is holding the All or Nothing coin is frozen in place and time for all eternity.

Notes: Bonus: Spell Attacks, Creature of Lucky Alignment, Control, Buff, Jewelry