Void Shard

As an additional cost to cast this spell, discard a card, pay three life, sacrifice a major permanent,
and pay {1}{b}{b}. (A permanent is major if it is legendary or costs five or more).

Destroy target permanent.

You may pay one less additional cost to cast this spell if it targets a enchantment, two less costs if it targets a creature or planeswalker, and one less cost if it is your turn.