Catalyze (起導, Kidou) is a keyword introduced in SD31. It is not limited to any color, but most cards with this effect are in the family Catalyst. The effect reads:
- Catalyze: [Color] (When Attacks) By sending (Soul Core) from this Spirit to your trash, immediately activate your set [Color] Soul Burst.
This effect is meant to be combined with the ability Soul Burst. In most cases, Catalysts are able to activate Soul Bursts of all colors, but some are limited to their own color.