While this is a pretty reasonable argument, it's also true that, at least as far as Standard is concerned, the most game-winning things to cheat into play are creatures, which makes Thran Temporal Gateway pretty similar to Amulet, with the upside of hitting weird permanents but evened out by the downside of not putting non-legendary creatures into play
One boom cycle like that can literally 3x to 10x the values of your good cards
If no card is exiled with this artifact, it can't add mana
Of course, some of your opponents might not be too thrilled about you playing mass land destruction, so this one might necessitate a Rule 0 conversation
Shift enables cards to be played at a reduced ink cost if theyre placed on top of another card matching the requirements for that card
All you need to do is start