Apologies for the wait on this one: I moved to Paris for the summer and forgot my laptop charger which wasn't easily replaced, and then for extra fun I'm literally sweating as I type because my place is a sauna with no air conditioning and THEN the site crashed right as I hit "send" on the article without saving ahead of time so I had to rewrite everything whee
We've put together a Lorcana rules guide to help you understand Shift a little better
Fortunately, there are great white MTG card draw options out there, and you can have them for budget prices, too
You can make infinite tokens with Appa, Steadfast Guardian and Felidar Guardian, for instance, or draw your deck with Whispers of the Muse, Chakram Retriever, and a mana dork
Hell, its not even as good as Ultima in most situations
You can then choose to cast them without paying their mana costs, and yes, you can also choose to stack all of the nonland spells in whatever manner you prefer