You control an artifact and/or land that enters the battlefield untapped and can tap to produce at least ({U} magic symbol) .
Steps
Activate Will's second ability by removing two loyalty counters from it, causing target player to draw two cards and causing all instant, sorcery and planeswalker spells you cast to cost ({2} magic symbol) less this turn.
Activate the aritfact and/or land by tapping it, adding at least ({U} magic symbol) .
Cast
Ghostly Flicker by paying ({U} magic symbol) , blinking
Shipwreck Dowser and the artifact and/or land.
Shipwreck Dowser enters the battlefield, returning