2+ monsters Gains 300 ATK for each different Attribute on the field. Once, while this card is face-up on the field, during the Main Phase (Quick Effect): You can target 2 monsters in your GY with the same Attribute but different Types, or with the same Type but different Attributes; Special Summon both, also until the end of the next turn, this card and the Special Summoned monsters cannot be used as material for a Fusion, Synchro, Xyz, or Link Summon. You can only use this effect of "Charmer Quartet in Bloom" once per turn.
