They make it easy to build decks without spending a fortune on packs or single cards
Many of the best white creatures include abilities that force your opponent to play around additional costs, can swarm the board with all sorts of little creatures, and control the skies with flying creatures like angels
Three mana is usually enough to make a sorcery speed, zero tempo tutor effect weak and see little to no cube play
- Frostwielder: 4CMC is a little expensive for a one-damage pinger, but the fact that she exiles makes her pretty solid for EDH
Lair lands offset this by providing immediate color variety, but they force you to return another land to your hand
When you add this all together, Soulless Jailer is in the conversation for sideboard slots alongside cards like Grafdigger's Cage, Weathered Runestone and friends