Weave

The Weave card deals only a small amount of damage, but in a deck with many sources of scrying you can return every copy of Weave to your hand multiple times per turn. This can turn it into the backbone of your offense.
One important note is that if you choose to discard Weave while scrying, it will immediately be returned to your hand for free. Thus you should always choose to discard Weave, unless that would lead to your deck being reshuffled at an inconvenient time.