Combos Utilizing Master-Decoy

Spend W & tap Master Decoy to tap opponent's creature. destroy that creature with Death Stroke.

Tap a creature force it to attack it can't it dies

use non-tappers with meek stones and titans to destroy. throw in blinding angels for kicks and giggles.

Tap opponent's creature and then destroy it with the assassin

Use Master Decoy to tap any creature you want and use either Vengeance or Death Stroke to kill it.

Spend W, tap Master Decoy and tap opponent's creature enchanted by Betrayal. You get to draw a card.

Use the Master to tap their creature, then use the Imp to force it to attack. It can't, so it dies at the end of turn.

play meekstone and then master decoy, tap a creature the other play owns with power 3 or greater with master decoy and meekstone will make never untap again. this is a combo for white weenie deck.

Spend W and tap Master Decoy to tap creature. Tap King's Assassin to destroy that creature.