The temples are just way worse surveil lands, so they can go too
Exemplar of Light is here to draw a few extra cards, and over the course of a few turns it can grow to be a sizeable flying threat
Because Helm of Obediences ability only stops milling once it has either milled X cards or a creature, if you have a replacement effect in play that exiles cards when they go to the graveyard, the Helm never sees either of its conditions met, and it just mills the entire library
In a single item, you're able to draw a card when you play it, immediately replacing the card by gaining another in your hand upon play
It also makes it so that your Dragons costs one less mana to cast if its on the battlefield or in the command zone
You may cast one of them without paying its mana cost weve never seen an effect like this before