Its all about counters, meaning you can buff your creatures, deal damage, and proliferate
And she had to reject this illusion to advance
For example, if you attack with a creature that is equipped with Acquisition Octopus, then use reconfigure to unattach Acquisition Octopus after combat, the Octopus will be untapped and could be used to block during your opponent's turn
For example, if you're blocked by a 1/1 and a 2/1, you can deal your one damage to the 2/1
Imagine this leading a Voltron deck with a giant 15/15 unblockable body that also keeps people from attacking you
We'll note that some other decks are a little formulaic, reduced to two core gameplay strategies and little else, but that is preferable to the mess of keywords, actions, mechanics, and