Talk:Fire God Surtr/@comment-188.108.69.236-20170917124908/@comment-25435121-20170917175454

I've made all the custom skill and the most useful are:
 * 1) Awoken burst: If you have other "G" class cards in the deck. It's extremely useful for healing and increasing DMG if nothing else. As LJ said, it's great when used with a multi-hitter against LAW, EH, and Tower events.
 * 2) Damage + TS: good supplement for longer battles like LAW or Tower events. Can be useful for EH, but not as much
 * 3) Heal: Good for weaker teams if you also upgrade the heal skill to lvl6+ Low level heal skills will not activate fast enough to make a difference, but that means burning more Gems
 * 4) Proportional & Fixed dmg: useful for whittling down servants in Tower events or Advanced EH. Only recommended for the damage skills that can take off more than the max damage (999,999+). Still you are probably better served with the Damage+TS
 * 5) AOE: Useful if you can't make anything else.
 * 6) Own Atk Up: It takes too long to activate to change anything in just about any battle. Even at max level it's pretty useless unless you have NO OTHER BUFFERS. By the time it activates, your other team buffs should already have you at max damage, or the battle will be over anyway.