2 LIGHT monsters, including a monster with 2000 or more ATK.
If this card is Link Summoned: You can target 1 "Photon" or "Galaxy" monster in your GY; add it to your hand. During your opponent's Main Phase (Quick Effect): You can discard 1 "Photon" and 1 "Galaxy" card, OR discard 1 "Galaxy-Eyes Photon Dragon", then target 1 Special Summoned monster your opponent controls; destroy it. You can only use each effect of "Galaxy-Eyes Solflare Dragon" once per turn.