Destroying all lands (even just nonbasic ones), while not as common these days as it used to be in the world of Magic, is still a potent effect, and Ruination does the job extremely well
Traverse the Ulvenwald is up a bit, and Im a buyer at current retailit sees a lot of play in both Standard and Modern, which gives it a very low floor
Still, here are some reasons why its good: For Orzhov (the best performing x archetype), this is a small creature that rewards you for playing other small creatures
Displays of Set Boosters include 30 packs
Your opponents want to ensure each player gets at least one vote so they dont get a free permanent on the field, but you also want to make sure nobody draws too many cards

Sea Aquarium | Commander | Abe Sargent Commander (1) 1 Lorthos, the Tidemaker Creatures (35) 1 Charix, the Raging Isle 1 Chromeshell Crab 1 Coral Barrier 1 Coral Colony 1 Coral Eel 1 Clinging Anemone 1 Great Whale 1 Gulf Squid 1 Hammerhead Shark 1 Hedron Crab 1 King Crab 1 Man-o'-War 1 Manta Ray 1 Mirrorshell Crab 1 Moat Piranhas 1 Numbing Jellyfish 1 Octavia, Living Thesis 1 Octoprophet 1 Ruin Crab 1 Sand Squid 1 Sea-Dasher Octopus 1 Sealock Monster 1 Sigiled Starfish 1 Skyclave Squid 1 Sky-Eel School 1 Spined Megalodon 1 Spiny Starfish 1 Thassa's Emissary 1 Thassa, God of the Sea 1 Tidal Barracuda 1 Thought Sponge 1 Vivid Flying Fish 1 Voracious Greatshark 1 Walking Sponge 1 Windrider Eel Instants (5) 1 Submerge 1 Thassa's Intervention 1 Thassa's Rebuff 1 Think Twice 1 Wash Away Sorceries (8) 1 Crush of Tentacles 1 Fathom Trawl 1 Inundate 1 Part Water 1 Ponder 1 River's Rebuke 1 Rush of Knowledge 1 Thassa's Bounty Enchantments (3) 1 Coral Reef 1 Flood 1 Tangle Kelp Artifacts (9) 1 Arcane Signet 1 Mind Stone 1 Prismatic Lens 1 Quicksilver Fountain 1 Sapphire Medallion 1 Sisay's Ring 1 Sky Diamond 1 Stonespeaker Crystal 1 Thought Vessel Lands (39) 1 Academy Ruins 1 Coral Atoll 1 Guildless Commons 1 Halimar Depths 1 Lonely Sandbar 34 Island And there we go
