Default Planar Gateway seems completely useless. It costs 1 source, however many AP to cast, and then a basically two full turns to walk through (Walk-up + 6AP). What is that come on! Anyway:

Planar Gateway totem can now be used for free by party members. Casting AP, source cost and cooldowns have not been touched. This mod only changes the summoned totem "crystal" item itself, and should be 100% compatible with mods that change the cost of casting the spell, such as one that removes Source costs. It is however incompatible with any mod that changes the in-game model for the totem summoned via Planar Gateway. 


Enemies won't walk through the gateway (same as default, I can change that if a bunch of you ask.) but friendlies might path through it even if you don't explicitly tell them to. Though I wouldn't rely on this, they're kinda stupid. 


Install same as every other mod. Unzip first. Place in %userprofile%\Documents\Larian Studios\Divinity Original Sin 2\Mods. Then launch the game and choose "Mods" in the main menu. Check this and other mods you want. Remember to hit Start and not B to back out. (Or Keyboard equivalent). Uninstall is painless, shouldn't make changes to your save file or leave any residuals.