Red-Eyes Retro Dragon (BOSH-EN095) - Breakers of Shadow Unlimited

If a Level 7 or lower "Red-Eyes" monster(s) you control, except "Red-Eyes B. Chick", is destroyed by your opponent's attack or card effect and sent to your Graveyard: You can Special Summon this card from your hand in Defense Position, and if you do, Special Summon as many of those destroyed monsters as possible in the same battle position they were in when destroyed. You can Tribute this card; you can Normal Summon 1 "Red-Eyes" monster during your Main Phase this turn, except "Red-Eyes B. Chick", in addition to your Normal Summon/Set. (You can only gain this effect once per turn.)