Aegwynn, the Guardian also grants his deathrattle to the next minion as Dragonrider Talritha or just by powers you mean give him only Spell Damage +2. It would be very interesting with minions that summon one copy or more.
Seems weird wordng when it could just be "the next minion you draw gains +2 spell damage and this death rattle". Maybe too much text?
Got me thinking though that card that chains could be very cool. The next minion you draw gains the +2 spell damage + 'these powers' which pass on the card text, meaning you can stack death rattles, card text and battlecries with each next drawn minion gaining the text from the minions before it. No idea how that would be if it was actually in game but a fun thought all the same.
Looks like an infinite loop to me but the card would indeed be much more interesting if it only granted its powers once.
This will be fun the first few days then will eventually degenerate into some sort of aggro OTK non sense with a +2 spell damage tinyfin that you can't play around because they removed all the good silence cards from the core set.