When players hear precon they often think 100-card Commander precons which range from set themes that don't fit Standard to special releases like the Warhammer 40k decks which are good examples of decks that preconstructed and powerful
There are too many different lines that allow you to combo off with these cards, so here is a link if you would like to explore it further
The only real problem is being able to fit the damage, since when not built for auras, decks of the enchantress archetype do not usually gain with combat damage, but remember that this is not a rule: Nylea's Colossus proves the opposite
Eugsph Storage Box with Sturdy Secure Large Capacity Hard Case [Best Storage for Toploaders & Magnetic Holders] The Eugsph Storage Box is made for collectors who take card protection seriously
You lose the card draw, but you protect all permanents you control with counters, including planeswalkers, and you tack on a free proliferate
For those who arent familiar with the usual cost for a precon (as will be the case for many drawn to the game for the first time by the FF crossover), you should really only ever expect to pay around $45 for a standard Commander deck