So many shenanigans
With so many token generators in cube combined with lots of cheap utility dorks it really isn't uncommon for boards to stalemate with enough spare to flip the Abbey
As far as looks, I would put them in the middle of the pack: acceptable but not exciting
What makes this Sliver so good is that it lets you cast all your Sliver spells at instant speed, letting you cast them at any time
Search Elemental's first ability won't be put onto the stack until after the spell or ability that caused you to search your library finishes resolving

Battle your way through the plane of Ikoria with monster-themed mechanics that grow your creatures build your bond and crush your opponents Timeless Wisdom Commander (1) Planeswalker (1) Creatures (23) Cryptic Trilobite Savai Thundermane Valiant Rescuer Agitator Ant Nimble Obstructionist Portal Mage Vizier of Tumbling Sands Brallin, Skyshark Rider Curator of Mysteries Surly Badgersaur Akim, the Soaring Wind Mercurial Chemister Psychosis Crawler Rooting Moloch Shabraz, the Skyshark Spellpyre Phoenix Ethereal Forager Isperia, Supreme Judge Niv-Mizzet, the Firemind Sun Titan The Locust God Eternal Dragon Herald of the Forgotten Instants (4) Fierce Guardianship Hieroglyphic Illumination Neutralize Zenith Flare Sorceries (8) Dismantling Wave Windfall Decree of Justice Migratory Route Akroma's Vengeance Boon of the Wish-Giver Descend upon the Sinful Slice and Dice Enchantments (14) Hoofprints of the Stag Lightning Rift Ominous Seas Tectonic Reformation Astral Drift Crystalline Resonance Drake Haven Martial Impetus Psychic Impetus Shiny Impetus Spirit Cairn Cast Out Reconnaissance Mission New Perspectives Artifacts (10) Sol Ring Arcane Signet Azorius Signet Boros Signet Fluctuator Izzet Signet Abandoned Sarcophagus Bonder's Ornament Commander's Sphere Raugrin Crystal Lands (38) Ash Barrens Azorius Chancery Boros Garrison Command Tower Desert of the Fervent Desert of the Mindful Desert of the True Drifting Meadow Exotic Orchard Forgotten Cave Hostile Desert Irrigated Farmland Izzet Boilerworks Lonely Sandbar Myriad Landscape Mystic Monastery Prairie Stream Reliquary Tower Remote Isle Secluded Steppe Shivan Reef Skycloud Expanse Smoldering Crater Temple of the False God Island x5 Mountain x5 Plains x4 Commander, Theme, and Strategy Gavi is all about cycling for the best cost in MTG: zero
