This is a very cool suggestion to implement an item that gives mana needing carries a chance to build something else than orchid and encourage movement across the map at the same time.
Spellblade of Azuregos
Once given to a powerful wizard by a legendary dragon, Azuregos. With this blade Kel'Thuzad created havoc on the battlefield in the time he served the kingdom of Lordaeron but the blade was taken to Quel'Thalas upon his death to be protected in the Arcane Sanctum.
+200% mana regeneration
Claymore - 1400
Void Stone - 875
Mystic staff - 2700
Recipe - 500
Encases the target in ice, making it unable to move. After the iceblock has received 250 damage it releases the person inside. Both sides can attack iceblock and it has to be destroyed before target can take damage. Lasts maximum of 10 seconds. Can target allied and enemy heroes only.
-Target inside the block can't destroy ice
-Allies and enemies can attack ice block.
-While hero is inside ice block it won't receive damage from any sources
-Ice block is destroyed if someone else uses this ability on different target inside 2000 range.
-The spell should be based on Entangling Roots, so it would be like CM's frostbite without damage and target is still unable to blink away.
-Unique item with unique ability
-Good ganker item
-Adds options for mana using carry heroes: brood, OD, WR and the likes
-Remade active ability...again
-Reduced bonus stats (15 -> 10)
-Reduced bonus damage (65 -> 46 -> 25)
-Changed components a bit
-Replaced Ultimate Orb with Mystic Staff and adjusted stats.
-Removed Spell immunity part and added item use restriction.