This effect targets 1
"Blackwing" monster in your Graveyard.
Special Summoning a monster with this effect is not considered a Synchro Summon.
You can activate this effect even if
"Discord" is active.
If the effect of
"Blackwing - Vayu the Emblem of Honor" is being negated by
"Skill Drain" you can use it for a Synchro Summon while it is on the field.
If the Synchro Monster you want to Summon with Vayu's effect is no longer in your Extra Deck when the effect resolves, you must Special Summon another appropriate Synchro Monster instead. If you do not have one, your opponent can check your Extra Deck to verify.
If an effect causes you to have no cards in your Extra Deck when Vayu's effect resolves, you still remove from play Vayu and the selected
"Blackwing" monster.
If Vayu or the targeted
"Blackwing" monster isn't in the Graveyard when this effect resolves, the effect is not applied.