The good news is, that ability is good on lots of board states
That said did you expect to see this card at number one on this list
Ive played in spurts here and there, occasionally participating in drafts but usually just playing with preconstructed decks to have some fun with friends and channel nostalgia for simpler times (my first-ever MTG purchase was from the 2001 Planeshift expansion)
If you can get Haakon into your hand, which you can do with cards like Netherborn Altar and Command Beacon, he becomes an incredibly grindy value engine for a Knight deck, letting you replay your fallen allies from your Graveyard
3 Master of Etherium, 1 Etched Champion, 2 Thoughtcast, 4 Steel Overseer, 1 Spellskite, 1 extra land, 2 Welding Jar This is the list I used at Pro Tour Born of the Gods