Regulus
Dead Eye -> Piercing Snipe
Right now: 3% chance for 0.3s stun. Replace this with... Piercing Snipe. This will pierce through everything in its straight path including the target DG. Every pierced DG reduces the damage by 100. Creeps/Minions in its path take normal damage.
QoT
Uproot -> Poison Ivy
Vines do xxx damage over 10s. Replacement: The target is infected with a ageing disease (and carries it around effecting all nearby units.) Also works on buildings, effecting their surrounding.
Oak
Rally -> Sacrosanct
If Oak kills a DG he and allies recieve +500 Armor and heal 1000 over 5s. Replacement... when Oak kills a target, he and his allies can't be effected by slowing effects for 0.5 seconds.
UB
Bestial Wrath -> ???
Weapon damage is increased by xx% for 7s. Replacement... still thinking here...