Gragas

Strengths

The damage reduction from Drunken Rage is applied when you start drinking, try to use it when you see damage coming your way.
Try to knock enemies back into your towers with Explosive Cask.
Try to combo Body Slam with Explosive Cask to set up kills for your team.

Passive · Happy Hour — Gragas periodically heals upon using a skill.
Q · Barrel Roll — Gragas rolls his cask to a location, which can be activated to explode or will explode on its own after 4 seconds. The potency of the explosion increases over time. Enemies struck by the blast have their Move Speed slowed.
W · Drunken Rage — Gragas samples his latest brew for 1 second. After finishing, he becomes boisterous and belligerent, dealing magic damage to all nearby enemies on his next basic attack and reducing damage received.
E · Body Slam — Gragas charges to a location and collides with the first enemy unit he comes across, dealing damage to all nearby enemy units and stunning them.
Ultimate · Explosive Cask — Gragas hurls his cask to a location, dealing damage and knocking back enemies caught in the blast radius.

A suggested 5-lane lineup built around Gragas, based on hero partnerships and role synergy — not win rate.