Hornet, Defender of Hallownest

Haste, Reach, Vigilance
When Hornet, Defender of Hallownest successfully defends against a creature, she deals one damage to the opponent that controls the creature
{t}{x}: Hornet, Defender of Hallownest Gains a +X/X counter. where X is the amount of mana used for this ability. She loses this feature at the start of her controller's next start phase.