Found all of the legendries. Rapier is absolute trash. Make it one energy. The three legendries are: Rapier 2 energy 8 base damage +7 damage for the combat if you take damage, Doru 1 energy 1 base damage +14 damage for the combat per turn and Robot Toy 1 damage per turn +2 damage per connected manastone.
Apparently Robot Toy procs spikes, not sure if that's a bug or not.