Someone like Natures Prophet from Dota 2.

[srthammanna]

A character with a staff that uses it to teleport from place to place globally on the map. He is sort of a steamunk warlock/necromancer/dark artist. This character shoots orbs from his staff after a short delay and then holds the staff to himself with both hands to recharge (reload) it with soul energy. He can also convert, or create minions with soul manipulation which follow him and attack units the character commands to, or automatically attacks whatever the character attacks. When this character teleports his soul bond fades and the units perish, same can happen when he grapples too far away. Instead of a gloabl damaging nuke give the character a skillshot that also slows/maims another character. For having such powerful abilities also make the character easy to kite and kill making the decision to teleport somewhere a careful and thought out one. Also make the location he is teleporting to have a special effect that is hard to ignore thereby giving the enemy ample time to consider their situation. Being a split pushing and camp clearing menace would make this character a formidable foe that would be perilous to ignore.

 

[Sarus]

Calico, an unreleased hero, can teleport to nearby minions. However, because of zip-lines in this game I'm not sure if they'll ever do a global teleport hero, kinda feels redundant imo.

 

[srthammanna]

Ziplines no matter what take time, I believe a global teleport even on a 2 second channel like NP would be mighty powerful, especially considering that ziplines only extend as far as your minions have pushed out. Imagine a situation where theyre taking mid boss, or the enemy patron is exposed. You can also use it to teleport back to base to buy items/regen albeit at a heavy opportunity cost.