It ignores the fact that its mostly a blue deck, eliminating maindeck countermagic and adding Nahiri, the Harbinger
However, since it does not have to be in a set state, if you chain it to an ad deck and activate this card from your hand, it will be treated as destroyed in the Magic/Trap Zone, and as a result, you can use both effects
5 Colors of Mana Two straightforward mechanics are maximized by being able to pay five colors in sunburst and converge
The Trainer Gallery elevates a cards worth, and special sets have performed well historically
Witch of the White Forest X SPELL Field When this card is activated: You can add 1 "White Forest" monster from your Deck to your hand, but you cannot Special Summon DARK monsters from the Extra Deck for the rest of this turn