I used several variations of a water/earth stall.
Against shockcannon, I used a version with too many tech cards and not enough quanta, so the healing was not enough to sustain me when I didn't draw a shield.
Against kaempfer I cut all the water cards except 4 purifies, switched to all stone pillars, and added 2 auburn nymphs, which was just enough CC to survive the bone dragons from his cat-tal (he also had a very slow draw).
Against ToRB, I cut the 4 icebolts for an extra EA, 2 auburn nymphs, and switched the quanta to stone pillars. The quanta was a little lean, and he used the explosions against my pillars since I got EA on both poseidon and shield. I locked him off aether after 2 fractals (1 of photon, 1 of archangel), but 7 archangels did enough damage with no nymph to slow them down and not enough quanta to get any big SS healing.
I liked CCC's unstable gas deck he used against me. Completely countered me game 2, surprised it wasn't used again in game 3.
This was also the only trio I played in the tournament. I think I overestimated the risks to the deck from flying eternity or other defensive tools, so I did not use it as much as I probably should have...
I also played a couple weirder decks... One was a deathstalker/eclipse duo dusk/vagger (with epic dusk RNG against shockcannon
but then completely fell apart against kaempfer's elite FFQ explosion deck), another was a spider-tal (which beat down kaempfer's deja-hope deck before he assembled all his defensive pieces
), and I also ran a deadly poison SoSac firebolt deck (which ToRB's UG deck wrecked in the final game
).