ioniboi

Cloud Key / Semblance Anvil (naming artifacts) + Top + Mystic Forge = Draw your entire deck. Key/Anvil are both useful regardless of the combo.

Not of This World - Free counterspell, while limited, proves useful

Voltaic Key > Manifold Key - How often do you use the "can't be blocked?" If you can't find cuts like you said, consider swapping manifold key for voltaic. The main reason below is as follows...

Adding Rings of Brighthearth allows you extra activations of MOST of your activated abilities. Rings + Key + Everflowing chalice (4 mana) nets you infinite colorless mana. Tap chalice for 4, key for 1 targeting chalice (3 mana floating). Hold priority, activate rings to copy the untap ability of key (note this only works for voltaic and not manifold due to the "other" artifact clause) targetting key to be untapped (1 mana floating). End result is 1 mana more than you started with

Also, if I'm not mistaken, adding Top to the above will allow you to draw your entire deck (could be wrong on the math on that one, but I believe once you have infinite mana, it should work)

Lmk what you think of each suggestion. Looking forward to your response