King's Synchro
When an opponent's monster declares an attack on a Synchro Monster you control: Negate the attack, then you can banish that Synchro Monster you control and 1 Tuner monster from your Graveyard, and if you do, Special Summon from your Extra Deck, 1 Synchro Monster whose Level equals the total Levels of those banished monsters. (This Special Summon is treated as a Synchro Summon.)
In synchro focused decks it's decent imo.