Dragon Rage (40 HP), Sonic Boom (20 HP), Seismic Toss (deals the same HP damage as the user's level), and Night Shade (same as Seismic Toss), OHKO moves (all of the targets health), Super Fang (half of the targets health), Natures Madness (same as Super Fang), Guardian Of Alola (3/4 of the targets health).
Source: Experience
Hope this helps! :)