The cards, which depict the main characters from The Brothers' War, are each notable for featuring the Meld mechanic, which allows them to combine with artifacts to form the ultimate Urza planeswalker, or Phyrexian Mishra
Ajani's Aid Altar of Bone Brightglass Gearhulk Caradora, Heart of Alacria Congregation at Dawn Dr
At the low cost of one specific colored mana, you can flip this card at the beginning of your first main phase
To be fair, a draw-your-deck Jason Bright combo might not require an anthem effect, but he does want me to have my Zombies die with a power that is different from their base power
For more detailed information about the venture into the dungeon keyword action and previously printed dungeon cards, please check out the Adventures in the Forgotten Realms Mechanics article