Changed AI X costs handling according human handling. Fixed AI handling of modal spells. Changed some AI setting. Changes to AI lgging.
Undone wrong fix to Curse of Exhaustion.
Support of X costs for CounterUnlessPaysEffect.
Changes to some X spells because adjustTargets works now for X spells of AI. By the way cost reduction of X spells for the AI should work now also.
Added Repeal, Condescend, SpellBurst.
Merge changes.