Talk:Guardian Beast, Eternal Gargoyle/@comment-35019468-20180228023947

Basically, this means that one of your units takes up permanent residence on your guardian circle. While it's there, it does the thing guardians usually do, which is increase your unit's Power by its Shield while it's being attacked. Since this specifies grade 1 or greater, it'll usually be 5000 Shield. There isn't a rule that specifies that your unit has to be attacked to receive the bonus from your guardians, so all of your attacking units receive the guardian's boost as well. TL;DR: While it's there, all of your units get [Power]+5000 while attacking or being attacked. Permanently.

The unit stays on the guardian circle until it's removed by an effect. This obviously includes Daikaiser, but also includes effects that specify circles like Perfect Performance, Ange or Dragonic Overlord "The Destiny", or the card that affects all of your opponent's units, Drachma.