I strongly feel that we need to move DPS support into other actions and leave the cards as utility only, at least in their own unique effects. That's the only way that we can reasonably see the cards not all do the same thing, because when utility is no longer competing against DPS, you have more opportunities to use these effects, and a more justifiable reason to have them be randomized. Here are some suggestions:

DRAW:
Balance:
Converts 20% of all damage dealt into HP.
Generates an Astral Seal.
- 15 seconds

Bole:
Reduces damage received by 20%.
Generates an Umbral Seal.
- 15 seconds

Arrow:
Reduces casting time by 50% (Does not reduce recast time).
Generates an Astral Seal.
- 15 seconds

Spear:
Grants immunity to cleansable debuffs and vulnerability.
Generates an Umbral Seal.
- 15 seconds

Spire:
Grants Sprint effect.
Generates an Astral Seal.
- 15 seconds

Ewer:
Restores 15% of maximum MP over time.
Generates an Umbral Seal.
-15 seconds