The Book of Honor of the Pure SPELL

[Ninja Status]

The Book of Honor of the Pure: Enchantment - Aura
Magic: Arena of the Planeswalkers master set

Enchant Squad
As long as you control only white creatures, all undamaged white creatures you control get +1 attack and +1 defense.

-Rulings and Clarifications-

• - TBA

-Combinations and Synergies-

• - TBA

Synergy Benefits Received

• - TBA

Synergy Benefits Offered

• - TBA

-Strategy, Tactics and Tips-

• - TBA

Unit Strategy Review

• - TBA

[Confred]

Several of the cards, like this one, take liberties in converting from Magic: the Gathering.
I find it neat, and creative.

For example, if you're damaged, you've become sullied and impure, thus this enchantment doesn't help you.