would Ionize fit the theme?

Archmage's Charm could be nice. Could be a little hard to cast under Blood Moon though.

Sweet deck though, I like it.

Thanks for the upvote Hardhitta7.

Thanks for the suggestions. I will definitely look into Counter spell. I already have Serum Visions . I like Archmage's Charm but what do I cut or add and how many lands do you think I can get away with?

The list looks solid. Have you considered Force of Negation ? Also maybe 1 Spell Snare .

How has Bonecrusher Giant been working out for you? I know it's ubiquitous in standard but I feel like more counterspells or something like Dreadhorde Arcanist / Sprite Dragon / Thing in the Ice  ^Flip (which lets you reuse borrower and snappy) might be better. I'd probably lean towards Thing or Dreadhorde since the deck doesn't feel aggressive enough for Sprite though.

Can't afford Force of Negation or get hold of them Went all in on the Blood Moon plan and removed Bonecrusher Giant .

I love blue moon lists. I would make a few changes though: The Royal Scions isn't as good as you might think it is. If you want a loot I would play Teferi, Master of Time , otherwise I would be on Jace, the Mind Sculptor if your budget allows or Chandra, Torch of Defiance .

Archmage's Charm is also certainly a must for a deck with this many blue sources. I'd consider adding more removal if possible, try Electrolyze , Izzet Charm , or Prismari Command . I'd definitely shave a blood moon too as they suck ass in duplicates.

Oh, and add a sideboard.

Expressive Iteration

Expressive Iteration in a control deck?

I mean tempo decks run cantrips like visions so it's like visions x2

8 Threats may be a little low for this type of deck. If you want this to be a tempo deck, I recommend no fewer than 12 threats (maybe adding Dragon's Rage Channeler, Delver of Secrets  ^Flip, or Ragavan, Nimble Pilferer). Or if you want this to be more controlling, adding more card advantage with something like Jace, the Mind Sculptor. I believe with your current build, you will control the early game, then lose after not being able to answer a single threat.