Continuous Spell Card

Continuous Spell Card
A Continuous Spell Card is a Spell Speed 1 Spell Card that stays on the field once it is activated. Spell Ruler, previously known as Magic Ruler, was the first TCG Booster Pack that contained Continuous Spell Cards.

Chain
The Effects of most Continuous Spell Cards do not start a Chain, but there are some which do, for example, "Soul Absorption" has a Trigger-like Effect and "Valhalla, Hall of the Fallen" has an Ignition-like Effect.

Resolve on the Field
A Continuous Spell Card has to stay on the Field in order for its Effect to resolve.