Summon a Holy Tiger token.
, , put this card into its owner's cemetery: Summon a Holy Tiger token.
QIf my field has reached its card limit, can I still summon a Holy Tiger with this amulet's activated ability?
AYes. This amulet leaves your field when you pay the ability's cost, so by the time the ability is resolved, you will have space on your field for the Holy Tiger.
QCan I pay the cost for this amulet's activated ability when it's engaged?
ANo. The cost requires you to engage it, so if it's already engaged, you cannot pay the cost.