Leyline of the Guildpact & Multiverse Passage Bug
There is a bug that occurs when "Multiverse Passage" is placed on the field and "LeyLine of Guild Pact" is on the field, and if you choose any color, all colors should appear due to the effect of the power line, but it is overwritten and only the selected color appears. Why is it a permanent effect? Also, the "Multiverse Passage" that landed is supposed to appear in all colors after a few turns, and there seems to be an issue where the substitution effect of the Leyline of Guild Pact does not activate immediately. Please fix it.
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Rezzahan#77802
commented
Nothing to fix. Both effects are continuous effects that apply in the same layer and do not have dependency. So the later effect simply wins out because it is applied later. The Leyline gives all basic land types in addition, the Passage overwrites that with a single basic land type, not in addition. If the Leyline enters after the Passage, the order is reversed, and the Passage ends up having all basic land types.