If you wish to cast the card, you do so as part of the resolution of Synthesis Pod's ability
For my personal tastes, I would be scouring my rare binders for copies of Auratouched Mage, Eldrazi Conscription, Gigantiform, and Starfield of Nyx to start swapping out any less than ideal reprints
2 Doorkeeper Thrull No More ETBs Enter the battlefield triggers are some of those annoying things that your opponents try to do that always seem to mess your game up
Like Azure Mage, its a nice way to spend mana and draw cards, and it has synergies in wizard decks
You only want 1-3 per list, usually on the lower end of that range
I feel that we found some creative ways to make sure we always have a ton of Clue tokens out, and we have quite a few ways to make use of them for things other than just drawing cards