Spike is a battle mechanic in Xenoblade Chronicles. It is an effect whereby the recipient is damaged or debuffed under certain conditions. Spike damage is shown as a purple-coloured number. Enemies' spike abilities have a limited radius, so the battle members can avoid the spike damage by being outside of the maximum radius. Enemies can also receive spike damage by battle members, who have a spike aura active or spike gems equipped. Enemies may have one of three spike abilities: