Spectre Ghost

{e}{e}: This creature gains Cloak (This creature
has hexproof and indestructible unless an
opponent controls a creature with detector)
At the beginning of your main phase you may
pay{e}, if you don't, this creature loses cloak.
At the beginning of your turn, if this creature
does not have cloak, gain{e}
{3}: Deal 1 damage to up to 3 targets.