The next one I wasn't sure who was more annoying but either Xenagos, God of Revels or Purphoros, God of the Forge
Gaining enough life to bring back huge beaters every time with this ability does not seem difficult
Eldrazi Incursion and Eldrazi Incursion Collector's Edition 0004_MTGMH3_CmdFace: Ulalek, Fused Atrocity 0005_MTGMH3_CmFeatur: Azlask, the Swelling Scourge 0147_MTGMH3_Vanity: Ulalek, Fused Atrocity 0143_MTGMH3_ComPorEc: Ulalek, Fused Atrocity 0136_MTGMH3_ComPorEc: Azlask, the Swelling Scourge 0151_MTGMH3_EclVanty: Ulalek, Fused Atrocity Check out the cards from Eldrazi Incursion and Eldrazi Incursion Collector's Edition in the Modern Horizons 3 Card Image Gallery
The power is definitely there if you can protect it, and Miirym is in the colour of counter magic
Falco Spara, Pactweaver Falco Spara, Pactweaver gives you a counters commander that wants to remove counters for card advantage

Atraxa and the Wrong Counters Atraxa, Praetors' Voice | Illustration by Victor Adame Minguez Commander (1) Creature (22) Deepglow Skate Elvish Farmer Feral Thallid Icatian Moneychanger Kabira Vindicator Kazandu Tuskcaller Leech Bonder Lighthouse Chronologist Ludevic's Test Subject Musician Mycologist Psychotrope Thallid Sporesower Thallid Student of Warfare Thallid Thallid Devourer Thallid Shell-Dweller Thorn Thallid Thrummingbird Transcendent Master Utopia Mycon Vitaspore Thallid Sorcery (2) Instant (2) Brokers Confluence Clockspinning Artifact (16) Chimeric Mass Contagion Clasp Contagion Engine Darksteel Reactor Investigator's Journal Lux Cannon Luxior, Giada's Gift Mercadian Lift Oracle's Vault Replicating Ring Sphere of Annihilation Strixhaven Stadium The Ozolith Tome of Legends Transmogrifying Wand Wishclaw Talisman Enchantment (21) Black Market Bounty of the Luxa Crescendo of War Endless Scream Fungal Bloom Gutter Grime Helix Pinnacle Hoofprints of the Stag Legacy's Allure Luminarch Ascension Mind Unbound Ominous Seas Out of Time Palliation Accord Parallax Nexus Parallax Tide Parallax Wave Pursuit of Knowledge Resourceful Defense Serra's Liturgy Venarian Gold Land (36) Arcane Sanctum Azorius Chancery Calciform Pools Command Tower Dimir Aqueduct Dreadship Reef Evolving Wilds Exotic Orchard Forest x4 Fountain of Cho Golgari Rot Farm Hickory Woodlot Island x2 Karn's Bastion Opulent Palace Orzhov Basilica Peat Bog Plains x3 Remote Farm Rushwood Grove Saltcrusted Steppe Sandsteppe Citadel Saprazzan Skerry Seaside Citadel Selesnya Sanctuary Simic Growth Chamber Subterranean Hangar Swamp x2 Terramorphic Expanse Magic: The Gathering has used counters to represent any number of ephemeral effects on creatures
