Mysterious Signal

For each turn that passes with this card in play, put one charge counter ({x})on Mysterious Signal.

{x}{x}: Target creature gains +1/+1
{x}{x}{x}: Create 6 stardust tokens.
{x}{x}{x}{x}: Search your deck for any 6 cards, put them into your hand and shuffle your deck.

(After an ability is used, exile this card.)