You can claim item rewards from the Kyrian Covenant Quartermaster, Adjutant Galos, located near the Soulbinder. Kyrian Hearthstone purchasable from Renown Quartermaster at Renown level 11.
Here you can buy Kyrian Hearthstone Toy Boost for EU or US Servers.
You'll get guide for completing Kyrian Hearthstone Toy Boost
