Use this on an Arcana champion to change Arcana's effect to theirs.
Ahri: Gain Ability Power for each 3-star champion.
Hecarim: Units holding items gain Damage Reduction and Attack Damage.
Tahm Kench: Gain Health for each active trait.
Xerath: Abilities deal bonus true damage for each Charm purchased.
Emblem: Gain Damage Amp for each Spatula item equipped.