Body Slam to close the gap + slow, Barrel Roll for the burst, R to knock enemies back.
Gragas Wild Rift Expert Guide
§ 07b — Advanced MechanicsGragas: combos & tips Wild Rift
Charge the barrel, use Body Slam and Flash almost simultaneously to instantly appear in the enemy group, detonate the barrel, R.
Body Slam, Barrel Roll, auto-attacks to trigger the Happy Hour passive.
A charged Barrel Roll deals significantly more damage — throw it and detonate it on the target.
FAQ
How should I play Gragas in Wild Rift?
Gragas is generally played as Jungle. The first objective is to controlled full clear then ganks on lanes without escape; highlights 5/9. Its biggest edge comes from decisive control and dispersion with r.
When is Gragas strongest?
Gragas takes over in mid game: setup vision and e-flash angles; protect the smite fight with r.
How do I punish Gragas?
Gragas can be punished when dependent on cooldowns. A practical answer listed here is: Challenge his early camps with priority mid; punish his long CDs after failed E/R.