Eye of the Equinox only support item with NO CDR %

Eye of the Equinox
Unique - Spoils of War: Melee autoattacks execute minions below 400 health. Killing a minion by any means heals you and the nearest allied champion for 50 health and grants them kill gold. These effects require an allied champion within 850 units of the user and consume a charge.
Of all the support items that are in the game or provide gold per 10, the Eye of the Equinox is the only completed support item that currently has NO CDR statline attached to it. Is there any reasoning behind this? It feels underwhelming in comparison to the other support items.
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