Red tends to be the color with the most varied and interesting options in this category, but all colors have plenty of choices available
After doing a thorough research on a solid pile of precons and shuffling through a bunch of chaotic battles, I got answers
When you break it down, Questing Beast is a lot
My recommendation is to follow these instructions: 1-20 Sleeve and store in a side-loading binder 20-100 Sleeve, toploader, and secure storage 100+ Sleeve, toploader, and dedicated secure storage Grails / highly valuable cards Sleeve, toploader, and eventually a graded slab If you dont have a standard transparent penny sleeve at hand, every modern ETB offers a selection of sleeves
Either way the choice between a solid 2-mana creature or a variety of other potential sizes makes this a very powerful mythic