Could be a nice "spell-shaping" talent where allies within your AOE magic attacks take reduced damage or surfaces don't appear on them. Probably a significant downside would be necessary (reduced damage, slightly smaller AOE area, etc). Just something I thought of that might help with people who feel like mages just blow up their team, or with some weird mage and three melee tanks build. People who spread out their team won't need such a talent though.
