It only works well in decks that discard plenty of cards and have other cards that work well from the graveyard
Simic Sky Swallower
4 The Haunt of Hightower While Tergrid, God of Fright probably comes to mind when players think about a mono-black discard commander, The Haunt of Hightower is a solid option
While I think Asylum Visitor is somewhat overrated, it plays perfectly with Call the Bloodline, as it lets you turn cards that are stuck in your hand into Vampires to make Asylum Visitor give you more cards, and the lifelink can make up the lost life
So, now that you know how Pokmon card types work and why they matter, its time to start your journey
Slowly teased over the course of the Mirrodin block, with the Sword and Shield of Kaldra appearing in Mirrodin and Darksteel, respectively, the final reveal of Kaldra that came with the Helm was exciting indeed