Lost In The Maze

Set Trap - You may cast this card as a face-down
Artifact - Rubbish called Decoy by paying
{2}. You may flip it face-up any time by paying
its Trigger cost when its Trigger condition is met.
Trigger - An opponent attacks you with 3 or
more creatures. {1}{w}, Sacrifice Lost In The
Maze: For each creature, re-select which player
or planeswalker those creatures are attacking.
You may choose to remove that creature from
combat instead of attacking.