Realmcrush

Realmcrush:
"'Since the day his home was stolen by the Order, Bor'lak Realmcrush lives to crush the realm and return the southern highlands to Orc-kind.'"

Strategy:
Uppercut is powerful & worthwhile attack in most situations, even without the critical damage, but can be devastating when the critical chance hits. If the base damage + critical damage of Uppercut can KO an enemy, unleash it before using other abilities for maximum efficiency. Look out for opportunities to Dispel enemies with Brutal Smash. It can be particularly effective at removing enemy shields, so when focusing on a shielded enemy, look to start turns with this low cost ability. Avoid using Brutal Smash to KO enemies; instead use it after a KO for the chance to Dispel any Enrage stacks.

Items:
Realmcrush has a big health pool, so add Offense Boost items so he can hit harder. Add a Life Drain or Invigorate item for their terrific synergy with his Regeneration trait. You could even add a Momentum item for the healing bonus on KOs. Go with a First Strike item and use Uppercut for an early advantage.

Team:
Since Realmcrush can heal himself, you can get by without a dedicated healer. Instead add some allies that can support him with AP or debuffs. Try some beefy teammates like Orc Thug and Goblin Guard (with an Amp item), or some fast versatile allies like Demon Wing or Bandit Girl. You could also try Dark Archer or Hellkite and follow their Barrage/Melt Armor abilities for the chance to double the Expose damage with each Uppercut.