T.G. Halberd Cannon

1 Tuner Synchro Monster + 2 or more non-Tuner Synchro Monsters Must be Synchro Summoned, and cannot be Special Summoned by other ways. Once per turn, during either player's turn, when a monster(s) would be Summoned: You can negate the Summon, and if you do, destroy that monster. This card must be face-up on the field to activate and to resolve this effect. When this card is sent from the field to the Graveyard: You can target 1 "T.G." monster in your Graveyard; Special Summon that target.