The Way of the Thunderstrike centers on your ability to convert life energy, or Ki points, into energies like lightning, or technically heat if your DM lets you stretch it. your lightning is any color you choose when you select this subclass (most likely your favorite color). you can also use this to manipulate metals to some extent, forcing energy between the atoms. The monk who invented this subclass, Haru Tatsuo, used it to wipe out entire armies, create entire cities, and level mountains with pure energy.

Iridescent Lightning

Lightning Colors: you choose one of the colors below or roll a D8, re-rolling on an 8. Your color can be any shade of these. Indigo counts as blue for the purpose of this chart.

• Red: you can expend an extra Ki point when you use an attack to make it deal +1d4 lightning. this can stack.
• Orange: you can expend 1 Ki point to give yourself resistance to fire damage for 1d6 rounds.
• Yellow: you may spend 1 Ki point to give any ally within 5ft of you an advantage on their next attack roll, provided they and you are both conscious.
• Green: you may expend one Ki point to cast Faerie Fire.
• Blue: you can recharge a uncommon or common magical item that uses charges. spend 1 Ki Point per charge you replace.
• Purple: you can spend one Ki point to cast Darkness and 2 Ki points to cast Chromatic Orb (the damage is automatically Lightning).

shocking strike

you can spend one Ki point and make a DC: 10 Wisdom check (which you are proficient in) deal an additional 1d8 + wis modifier lightning damage for the next minute. you concentrate on this like a spell.

Electro-Magnetic

you can spend 3 Ki points to draw up to 25gp or 10 square ft. of raw materials form the ground, or refine a scrap of metal into a different shape, like a copper coin into one of those  handheld buzzer-thingies. any damaging gadgets made in this way deal 2d4 + wis modifier lightning damage. any projectors or hologram tech made in this way has a range of 5ft. you can increase both of those options by 1d4 (damage) or by another 5ft. (projector) by using this feature again within the hour. weapons count toward the 25gp value, and any creatue holding a metal weapon or wearing metal armor you manipulate in this way take 3d6 + 4 lightning damage.

Thunderstrike

when you hit with a shocking strike, you may spend an additional 5d8 + wis modifier x2 lightning damage, ignoring immunities and resistances. if you use this technique more than twice before taking a long or short rest, you gain 1 level of exhaustion per additional use. your Electro-Magnetic feature now has a max of 100,000gp.