An attack effect is an effect attached to the attack. It is applied either during damage resolution or after the attack (see list below). If it happens after the attack, it is applied even if the attack does no damage, including due to the NULL or Curse cards. You must choose whether you will do an effect to an attack before you draw a modifier card. Some modifier cards have their own attack effects and you can choose to apply them after you draw if they qualify as optional effects. Attack effects except Add Target are applied before retaliate (Add Target grants a brand new attack and one attack must be resolved completely before another is performed). Some attacks have Abilities (like Heal) that aren't attack effects but that are still attached to the attack. These abilities are applied after the attack is completely resolved (after retaliate).
Attack Effects:

- +X (during damage resolution)

- Pierce (during damage resolution)

- Add Target (after the attack)

- Push/Pull (after attack)

- Conditions (after attack)

- Infusions (after attack)

- Conditional statements written in small font below the attack, like Cragheart's Heaving Swing (after attack)