What is vigilance?Edit
A creature with vigilance does not need to tap when attacking. Normal creatures, when they attack, must tap to do so. Having to tap can be a nuisance because then they cannot block the next turn. Vigilance is perfect for such cases because you can be on the defensive while still attacking and dealing damage. One card, Griffin Sentinel, is a flying defensive card that can attack and deal 1 damage, and act like a wall for blocking. Another good vigilance card is Bull Cerodon, which will keep smaller creatures at bay and still come crashing in, breaking up small creatures and bashing dents in opponents life totals.