

The key is white, it's unlocked on some non-premium field.

As killing gem I use chain hit/poolbound/multiple damage - the last one scales rapidly above grade 12 or so.

To level up I use mass angering and GCL-style manafarms: a trap with mana gain/poolbound/chain hit - it grows extremally fast if you put about lv24 in pure colors, red, orange, white and trap skills. I've bought magican's pouch becouse I waited for this game for about a year - it helps a bit, but no SO much. I usually cover at least the area immediately around my towers and traps to avoid gem resocketing beacons. You don't have to cover every square, just enough so that there are no 2x2 openings for new beacons. If there are no valid openings, they won't appear at all.
