Overwhelm (When attacking an enemy unit, deal excess damage to the opponent's base.)
On Attack: If you control a leader unit, give a friendly unit +2/+2 for this phase.

Overwhelm (When attacking an enemy unit, deal excess damage to the opponent’s base.)

On Attack: If you control a leader unit, give a friendly unit +2/+2 for this phase.

Rules Clarifications:

• Shields prevent all damage from a unit with Overwhelm. There is no excess damage since the defender is not defeated.
• If the defender is defeated during an attack before combat damage is dealt, all combat damage is considered excess damage for Overwhelm.