Observing the State of Battle, Kingu (FGO/S75-E006 R) [Fate/Grand Order Absolute Demonic Front: Babylonia]

[AUTO] When this card is placed on the stage from your hand, you may put the top card of your clock into your waiting room. [AUTO] [(1) Put 1 card from your hand into your waiting room] When this card attacks, you may pay the cost. If you do, all of your "Chaldea" or "Babylonia" characters get +500 power and +1 soul until end of turn.