I've tried this for a bit, and I have to say it: This is the most overpowered mod I've tried. Even the first level is very powerful, the first two get absurd already... haven't got third level runes yet(but it's my next goal, because: targeted teleport). With just the first two you get: Blink A persistent knockback + damage rune(aka forcefield) Wall summoning Very powerful persistent fire aoe (on floor two enemies don't get through this one alive) Powerful persistent ice aoe Powerful persistent voltaic aoe Healing base Nimbleness/Dodge/EDR buff It's extremely easy to set up a healing base you can stand on, make a chokepoint with created walls, put force runes between those so things don't get through, and fire runes at the other end of the forcefield, and spam enemies with any damage runes you feel like. (all these steps are NOT required, often starting with a force rune, then a fire rune, and nothing gets to you alive, then you can set up a healing base so spellcasters don't hurt). With leylines it's easy to make basically unlimited supply of runes, so you don't ever need anything else to attack with, and can spam all you want/need.