Descent of Dragons Card List & Guide
If you play a battlecry minion that has been mana reduced and you play barista lynchen will you get the mana reduced copy or a full price copy of the card?
full price, unless the mana reduction comes from an aura effect that is still active
Unless otherwise specified, anytime a card puts copies into your hand or deck, they are unenchanted, undamaged copies of the original card.
(As Primus noted, the copies can still be altered by active global effects.)
Complaining about RNG in Hearthstone won't convince anyone that it's a bad thing -- it only makes them think you're too dimwitted to find a game that suits you better.