Blackwing - Twin Shadow

Shuffle 2 of your "Blackwing" monsters (1 Tuner and 1 non-Tuner) that are banished and/or in your GY into the Deck/Extra Deck; Special Summon 1 "Blackwing" Synchro Monster or "Black-Winged Dragon" from your Extra Deck whose Level equals the total Levels of those 2 monsters. (This is treated as a Synchro Summon.) If you control 2 or more "Blackwing" monsters, you can activate this card from your hand. You can only activate 1 "Blackwing - Twin Shadow" per turn.