Mecha Phantom Beast Hamstrat summons 2 token when he is flipped face-up. Cosmic Compass, when normal summoned, can special summon any number of tokens up to the number of monsters your opponent controls. Stray Lambs special summon 2 tokens to your field. Use these tokens as tribute to take your opponent's monster. Then use them to direct attack or tribute them to summon one of your own monsters.
Tributes for cost / Changes control
I love this card lambs and Mecha Phantom Beast Hamstrat. Take there monster for tribute. I had people just quit the game. LOL