Haakon, Stromgald Scourge and Aether Vial

[Skeggi]

Can I put Haakon, Stromgald Scourge into play from my hand with an Aether Vial with three counters?

[luma]

Yes, you can. Putting a card into play isn't the same as casting it, so Haakon's ability doesn't prevent you from putting it into play with AEther Vial.