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The aura rune draws that player a card, pumps a targeted creature plus-one attack, and provides it Haste

Since you can also use it on your creatures if you end up in a pinch, its useful all around

The top-decks are extremely well-rounded and powerful, and most brews will lack tools to deal with both the aggressive Obosh decks and ultra-greedy Yorion lists

Since there are many non-creature permanents, there are many situations where Fracture and the like are useful

White players who like to complicate combat have been making use of Angelic Skirmisher for years, so a version of that targeting just one creature but at half the cost might generate interest to some

This ones a reprint, but its really powerful, and Commander players love it