Temporary CDR summoner spell
The idea came to me when I was playing Ryze the other day. I was merely sitting on a tear with no CDR at that time and I got dove under tower and they killed me. The fight was VERY close ( I could have killed the jungler for delicious double buffs). The first thing I said was, "damn, if I only had 10% CDR then my abilities could have been up faster". Then it hit me, what if there was a rune that gave temporary CDR for 10 seconds in a fight. I'm sure with some number adjustments it could be properly balanced. This would be extremely useful for champions that duel that don't want to take exhaust/ignite. It could be considered an offensive or defensive summoner spell.
Thoughts?