The constant disbanding of Steps of Faith

[Raeletta]

Alright then, Nael is a walking oneshot mechanic. She hits me for 2-6k (depending on buffs/block/parry/crit) and then I explode 12 seconds later for 2-6k AND can take everyone near me out at the same time.
Batraals whirlwind move can oneshot squishies if they're stood too close. The belly on the goobue in Lost city will oneshot the person inside if it's not killed....

Everything can oneshot.

As for titan, I know it can be survived, but generally by not getting hit. Taking it is going to knock you flying.

Landwaster is capable, but with that channel time, it just doesn't even come close to being a oneshot mechanic.

Edit:

To further this, Tidal Wave, Judgement Bolt, Ultima, those are all oneshot mechanics of the highest degree, you didn't do what you had to? Wipe, no argument.

Further edit for fun:

Landing on the ground out of combat in titan will also kill you, the floor does damage.