Considered it, but it's mana-intensive. I'd rather have Awakening Zone for a counter-a-turn effect, and even that's too ineffective despite producing mana.
Not great. Does nothing on its own, doesn't provide experience, and your experience counters don't go away. Having Ezuri out should accomplish the same thing as playing The Ozolith, but one of them helps you build counters, the other is a very situational "what if" that will rarely (if ever) matter. For one mana, I'd rather play something to disrupt the spell that would cause the creature to leave the battlefield.
Blade Splicer, Seasoned Pyromancer, Rabblemasters, etc. are all reasonable inclusions (and Recruiter targets) for Boros already, so this seems like it fits perfectly.
Gaea's Herald does the same thing and is an Elf :/ I'd like one copy of that effect but I think Mystical Dispute and Veil of Summer would make it in before either of those creatures.
Itlimoc is a little slow and conditional. 3 mana to not immediately be able to produce mana, provide experience, or disrupt is a huge strike against the card, not to mention the 4 creature requirement, which is normally only met ~1 turn before I go off. It's win-more.
As for Oko, I've been thinking about it, but not entirely sure I need it. It is good for disrupting Cursed Totem though.
Also, Yisan, the Wanderer Bard is definitely leaving for Mystical Dispute.
Lutri, the Spellchaser (Electrolyze)
Lurrus of the Dream-Den (Sorin, Lord of Innistrad)
Vadrok, Apex of Thunder (Stonecoil Serpent)
Shark Typhoon (Inkwell Leviathan)
Heartless Act (Liliana's Triumph)
Luminous Broodmoth (Gisela, the Broken Blade)
Kogla, the Titan Ape (Greenwarden of Murasa)
Gemrazer (Yavimaya Elder)
I'm also looking to add Boreal Druid and try Chrome Mox again just to be a bit more explosive.
As for Oko, I've been thinking about it, but not entirely sure I need it. It is good for disrupting Cursed Totem though.
Nothing from Theros.
2WW
Sorcery
Each player who controls a creature with power 4 or greater draws a card. Then destroy all creatures.
Do we want a 3rd 4CC monowhite wrath? If so, at what size?
1 Ancestral Recall
2 Time Walk
3 Mana Drain
4 Jace, the Mind Sculptor
5 Tinker
6 Treachery
7 Upheaval
8 True-Name Nemesis
9 Opposition
10 Consecrated Sphinx
11 Mystic Confluence
12 Show and Tell
13 Snapcaster Mage
14 Vendilion Clique
15 Cryptic Command
16 Jace, Vryn's Prodigy
17 Vedalken Shackles
18 Control Magic
19 Counterspell
20 Mystical Tutor