First strike is just a generic dmg rune wich we already have a lot of. plus its stale and boring. omnistone was unique. like dark harvest empowered other runes and you could stack grasp for more max health. even if you didnt need that plus health it came in handy every game. so pls bring it back and work more on it. maybe have 2 keystones at one time and make the cooldown significantly larger so you have to be more dependent on your keystones.