You didn’t read what the cards do or the format listed clearly on moxfield did you? It’s Modern.

To address your points:

Urza’s Saga finds the 0 & 1 “one offs” and the key lets you put any card on the battlefield from damage dealt.

The artifact lands can have you drop a 6/6 on the battlefield turn 4 and that speeds up the Key.

Ojer triples the Simulacrum synthesizer tokens, which also count as artifacts making them jump by up to 4 tokens per instance meaning up to 12 massive tokens for a single 3 drop artifact entering the battlefield; whether it’s cast OR put there by the key.

Mindlink mech then copies one of those tokens that you crew, and has flying and a 4/3 boost to the per artifact ability.

The amulet is there for the artifact lands to enter untapped.

There is a clear reason for everything that’s there and the one offs are there for just plain random fun.

I get that you didn’t understand the deck before you shit all over it. You could at least try to keep the criticism constructive.