Newbie question regarding global enchantments.

[tromper]

Don't insult me. Don't be a jerk. Moderators, shunt this elsewhere or eliminate it, if necessary. Too many of you experts are arrogant and domineering. Be kind more often, yeah? Yeah.

I had been saving up to cast Arcane Nexus for about ten turns. I finally did so. The message this turn reads, exactly: "Your global enchantment was overpowered by the existing enchantment and failed to take effect."

I've casted Stellar Focus, Haunted Forest, and Sea of Ice. All of which are in effect. The 'difficult' level R'yleh AI. that has been destroying everything and everybody easily as I've played off and on for the past two weeks, has cast The Eyes of God and Gift of Health. Arcane Nexus has not been cast by any party, not once. I check each turn of course.

This turn, those are the five enchantments active. I just lost a bunch of gems, last turn, attempting Arcane Nexus. I spent twenty astral pearls beyond the minimum.

Am I not understanding something? My pretender, the caster, is fine. I can't understand this. It's pretty much ruined this extended game for me. Please oh please clue me in. Hopefully it's something simple and I'm a dunce.

Thanks!