Maybe no one runs flexible blue decks anymore which is why Sea Scryer is in danger of being left behind
Staples from the 90s like Lightning Bolt or Counterspell still see play on MTG: Arena when format-legal

The deck includes a mix of samurai creatures, support cards, mana ramp, and basic lands for a cohesive strategy and balanced gameplay." - EDHGen.ai Creature (25) Samurai Enforcers|$0.21 Samurai of the Pale Curtain|$1.15 Sensei Golden-Tail|$2.17 Devoted Retainer|$0.18 Hand of Honor|$1.98 Konda's Hatamoto|$0.26 Bushi Tenderfoot|$0.27 Masako the Humorless|$5.05 Mothrider Samurai|$0.10 Nagao, Bound by Honor|$0.28 Takeno's Cavalry|$0.14 Konda, Lord of Eiganjo|$6.08 Abdel Adrian, Gorion's Ward|$0.11 Leonin Relic-Warder|$0.41 Myr Battlesphere|$0.21 Eldrazi Displacer|$2.47 Teshar, Ancestor's Apostle|$0.16 Glint Hawk|$1.77 Ornithopter|$0.11 Fiend Hunter|$0.20 Kitsune Blademaster|$0.18 Inner-Chamber Guard|$0.13 Araba Mothrider|$0.22 Indebted Samurai|$0.60 Roaming Throne|$30.75 Instant (2) Tithe|$22.15 Call to Glory|$0.28 Sorcery (1) Gift of Estates|$1.02 Enchantment (10) Ghostly Prison|$2.02 Banishing Light|$0.09 Pacifism|$0.04 Prison Term|$0.80 Faith's Fetters|$0.01 Karmic Justice|$3.46 Journey to Nowhere|$1.61 Oblivion Ring|$0.31 Land Tax|$15.49 Opalescence|$12.23 Artifact (24) Umezawa's Jitte|$8.54 Konda's Banner|$7.75 Hero's Blade|$0.13 Ronin Warclub|$0.22 Sensei's Divining Top|$23.86 Skullclamp|$9.22 Slate of Ancestry|$1.00 Mask of Memory|$0.19 Sword of the Animist|$8.06 Lightning Greaves|$5.57 Swiftfoot Boots|$1.58 Pearl Medallion|$8.26 Marble Diamond|$0.14 Runed Stalactite|$0.15 Commander's Sphere|$0.12 Mind Stone|$0.11 Hedron Archive|$0.41 Caged Sun|$2.04 Sol Ring|$1.19 Krark-Clan Ironworks|$42.17 Blasting Station|$6.51 Null Rod|$null Mycosynth Lattice|$12.12 Oathkeeper, Takeno's Daisho|$4.50 Land (37) Nykthos, Shrine to Nyx|$35.40 Flagstones of Trokair|$1.86 Temple of the False God|$0.08 Secluded Steppe|$0.04 Drifting Meadow|$0.04 Emeria, the Sky Ruin|$11.99 Buried Ruin|$0.95 Homeward Path|$14.86 Mystifying Maze|$0.71 Mikokoro, Center of the Sea|$3.62 Karoo|$0.55 Kabira Crossroads|$0.36 Sejiri Steppe|$0.21 Ghost Quarter|$0.99 12xPlains|$null New Benalia|$0.18 Eiganjo, Seat of the Empire|$8.22 Idyllic Grange|$0.16 The Fair Basilica|$0.04 Path of Ancestry|$0.10 Myriad Landscape|$0.14 Opal Palace|$0.13 Command Tower|$0.21 Cavern of Souls|$31.97 War Room|$1.01 Eiganjo Castle|$13.69

Purphoros doesnt beat around the bush, but he will throw it at your enemies
Same goes for Dragon's Hoard, which gives you card advantage over time
When Cloud enters the battlefield, you can attach a piece of equipment to him for free, which is helpful given how costly Cloud himself is and how youll want to have him swinging the same turn hes cast