He is already strong, but he's definitely close to being well balanced. These buffs will drastically put him over the edge. People are still learning to use him properly. He does massive damage while building tanky already, and he's already seeing quite a bit of play top and mid.
Tongue Lash [Q] - Damage increased to 80/125/170/215/260 (up from 80/115/150/185/220)
Abyssal Voyage [R] - Cooldown lowered to 120/110/100 (down from 160/130/100)
Abyssal Voyage (R) passive's bonus damage to basic attacks & damaging abilities increased to 4/6/8% of bonus health from 4/5/6% of bonus health.