The Redeemer’s Light

Equipped creature gets +0/+2 and Ward {5}
Equip {3} This card loses its conversion ability if
not equipped to Leonidas
When the wielder of this weapon attacks and
would deal half or more damage of the health of
an enemy the player may instead pay X mana to
convert them to their side, where X is equal to
twice the mana cost and is reduced by one per
keyword added to the creature