I went 2-2 overall in this draft, ended up losing to JD in the playoff round.
Most of my games were long, and involved someone getting mana-screwed.
1st pack: Rite of Belzenlok
2nd pack: Jodah, Archmage Eternal
3rd pack: Teferi, Hero of Dominaria ($$$)

Game 1: Lost to PB's WB Knight deck (he had cards with excellent synergy - double striking knights all around; so many attempts at comboing ruined by destroy-creature effects)
Game 2: Won against JP's RW deck (He was mana-screwed, so I'm not sure what he was really playing)
Game 3: Lost to JD's U Flier deck (I was mana-screwed).
Game 4: Won against TH's WU life deck (longest and most intense game - got most of my saga-combos out, managed to come back from a 15+ life delta to win)

Playoffs: Swept 2-0 by JD's U Fliers. First game I was picked away by the 1/1 bird, second game I stalled him with sagas but to no avail.

MVPs:
Sagas - Rite of Belzenlok and Chainer's Torment worked well with the saprolings (sac outlets) and Rona / Sentinel of Pearl Trident (blinking).

I would use Rite / Saprolings to pump out many creatures as a sac outlet for the Rite Demon. Also useful with Whisper for a reanimation outlet. Chainer's torment kept up the health differential - I blinked this one multiple times to avoid the "big-dick-swing" 3rd effect. Tetsuko, 1/1 tokens, and Deathbloom Thallid were used as my constant offence.

Losers:
Supplement Spells - Deep Freeze and Soul Salvage - 2 of each, Freeze was intended for creature control, Salvage for reanimation. Turns out I only used Freeze once (so the potential is unknown), while Salvage stayed in my hand for the most part (only times where it could have been useful, all my creatures were either token-death'd or exiled).

Rona and The Eldest Reborn had potential but were under-utilized. I used each only once, and not to their fullest potential (Rona was exiled before I could recast a saga, Reborn never made it to Lore III).

This was my first 3 colour draft deck, specifically built around a theme / combo(s) - lots of mechanical complexity and fun, when it worked!