If you have your level 1 tuner in attack position and your Spirit (anyone), and your opponent a >lvl6 boss monster:
First tribute Spirit to special summon from hand or extra deck.
Then chain A Major Upset, this trap will return his boss monster. Only after the trap effect will your Spirit summons something.
In a Blue-Eyes deck it worked wonderfully against cards that keep coming back like Fortune Lady Every and other hard to deal with Boss monsters.
Sadly there is less synergy with Blue Eyes Solid Dragon.
During your opponent's battle/end phase return 3 boss monsters back to the hand, then summon your Azure Eyes or BE. Your turn, direct attack
Thanks for the broken combo. Who needs Raigeki any more?
If it is Level 5 or higher to be returned, this card's rarity would be at least SR