Actions

Multiattack Glanzmann can make two attacks.
Magic Ore Katana Melee Weapon Attack: +10 to hit, reach 5 ft., one target. Hit: 1d10+5 slashing damage or once per turn 1d10+1d6+5 slashing damage when Glanzmann is Large.
Fire Rune Strike (Ability, can be invoked on a Hit) (1/Short Rest) Melee Weapon Attack: +10 to hit, reach 5 ft., one target. Hit: 1d10+5 slashing and 2d6 fire damage and the target must succeed a DC 16 Strength Saving Throw. On a fail, the target is Restrained for 1 minute by fiery schackles and takes 2d6 fire damage at the start of each turns. It can repeat the Saving Throw at the start of each of its turns.
Lion's Claw Attack (3/Long Rest) Sommersault up to 15 ft. through the air towards a creature without provoking Opportunity Attacks and make a regular attack against a target. On a hit, deal an additional 2d6 damage.
Composite Longbow Ranged Weapon Attack: +6 to hit, range 200/600, one target. Hit: 1d8+4 piercing damage.

Bonus Actions

Storm Rune (1/Short Rest) For 1 minute or until incapacitated, when you or another creature within 60 ft. makes an Attack Roll, Saving Throw or Ability Check, you can use your Reaction to cause the Roll to have Advantage or Disadvantage.
Giant's Might For 1 minute, Glanzmann becomes Large, has Advantage on Strength checks and Saving Throws and can once per turn deal an additional 1d6 dmg.
Second Wind (1/Short Rest) Heal 1d10+9 .

Reactions

Runic Shield (4/Long Rest) When another creature you can see within 60 ft. is hit by an attack roll, you can use your reaction to force the attacker to reroll the d20 and use the new roll.