Synchro Summon is a special summoning method in the Yu-Gi-Oh! trading card game. It allows players to summon powerful monsters called Synchro Monsters by combining a Tuner monster with one or more non-Tuner monsters. The total levels of the monsters used must equal the level of the Synchro Monster being summoned. To perform a Synchro Summon, players first select the appropriate Tuner and non-Tuner monsters from their field. After ensuring their levels match, they send these monsters to the graveyard and summon the desired Synchro Monster from their extra deck. This mechanic adds strategic depth to gameplay, enabling players to access stronger cards.