Doshmancy

You brandish a single gold piece and send it flying towards a creature. Make a ranged spell attack against the target. On a hit, it takes 1d12 Force damage.

Additional coins can be used during the spells casting in order to produce additional effects. Only one effect from each category can be used per casting.

Damage:

50 GP - Increase Force damage by 2d4.

100 GP - Increase Force damage by 3d4.

300 GP - Increase Force damage by 4d6.

500 GP - Increase Force damage by 5d6.

1,500 GP - Increase Force damage by 8d6.

Utility:

25 GP - Change the damage type to Acid, Cold, Fire, Lightning, Poison, or Thunder.

150 GP - Gain advantage on the attack roll.

200 GP - Apply the Push, Sap, or Slow weapon mastery affect on a hit.

500 GP - Do not expend a spell slot as apart of casting this spell.

1,000 GP - The attack automatically hits its target.

5,000 GP - Treat the attack roll as a 20.

"Fun"

7 GP - Roll a d4. On a 1-2, you lose 7 hit points. On a 3-4, you restore 7 hit points.

77 GP - Roll a d10. On a 10, you regain your action after casting this spell.

777 GP - Roll a d6. On a 5-6, roll another d6. You regain an expended spell slot of a level equal to or lower than the number rolled.

7777 GP - Roll a d2. On a 2, the attack deals an additional 7d12 Force damage.

Using a Higher-Level Spell Slot. The initial damage increases by 1d12 for each spell slot level above 1.