It's only triggered when another card allows you to search through your library
While I'm not as up to date with the current state of the tabletop game, for many editions The Swarmlord was considered a difficult inclusion in Tyranid armies due to its underwhelming stats, so at least they managed to bring over a hallmark trait into its incarnation in Magic
Release date: 2020-01-29 Snow-Covered Plains Snow-Covered Island Snow-Covered Swamp Snow-Covered Mountain Snow-Covered Forest Bloodghast Golgari Thug Life from the Loam Reaper King Sliver Overlord The Ur-Dragon Bitterblossom Faerie Rogue Faerie Rogue Faerie Rogue Faerie Rogue Goblin Bushwhacker Goblin Sharpshooter Goblin King Goblin Lackey Goblin Piledriver Leonin Warleader Regal Caracal Qasali Slingers Arahbo, Roar of the World Mirri, Weatherlight Duelist Cat Cat Serum Visions Serum Visions Serum Visions Serum Visions Ink-Eyes, Servant of Oni Marrow-Gnawer Pack Rat Rat Colony Thalia, Guardian of Thraben Thalia, Guardian of Thraben Thalia, Guardian of Thraben Thalia, Guardian of Thraben Spell Pierce Blood Artist Eternal Witness Pithing Needle Inkmoth Nexus Captain Sisay Meren of Clan Nel Toth Narset, Enlightened Master Oona, Queen of the Fae Saskia the Unyielding Arcbound Ravager Darksteel Colossus Walking Ballista Heliod, God of the Sun Karametra, God of Harvests Iroas, God of Victory Thassa, God of the Sea Ephara, God of the Polis Kruphix, God of Horizons Erebos, God of the Dead Phenax, God of Deception Athreos, God of Passage Purphoros, God of the Forge Mogis, God of Slaughter Keranos, God of Storms Nylea, God of the Hunt Xenagos, God of Revels
Anything I missed or was out of place
As usual, the showcase versions of MTG 's Lorwyn Eclipsed cards are where the real value comes from, as the most expensive cards are normally only in the $10-30 range
