Honored Convention

Spells and abilities that do one or more of the following cost {3} more to cast or activate—
• Gain control of one or more creatures.
• Deal damage to or destroy a creature that didn't
attack or block last combat.
• Destroy one or more lands.
{bull} Deal damage to or destroy all creatures at least
one player controls.
{bull} Deal less than X damage to a creature, where X
is that creature's toughness.