Yiga Training. As a bonus action, the blademaster can teleport up to 20 ft. away to a place it can see.

Yiga Weakness. Whenever the blademaster smells or sees bananas, it becomes Charmed for 1d8 + 4 turns.

Multiattack. The blademaster makes two attacks with its Windcleaver (without the extra damage from Windslice), or two punches.

Punch. Melee Weapon Attack: +7 to hit, reach 5 ft., one target, Hit: 6 (2d6) bludgeoning damage. 

Windcleaver. Melee Weapon Attack: +7 to hit, reach 10 ft., one target, Hit: 10 (1d10 + 4) slashing damage plus the effects of Windslice. 

Windslice. Ranged Weapon Attack: +7 to hit, range 20/60 ft., one target, Hit: 10 (1d10 + 4) slashing damage. When used in conjunction with the windcleaver, the range becomes 15 ft. in the direction of attack. 

Volcanic Fist (3/day). The blademaster sends a wave of energy into the ground below. The energy moves towards to a target within 45 ft., cracking the very earth with it. A large rocky spire erupts from the ground under the target, which must succeed a DC 15 Dexterity saving throw or take 21 (6d6) fire damage plus 6 (2d6) piercing damage and be knocked prone. On a successful save, the target takes only half damage and isn't knocked prone.