If you'd like to reference the scavenge ability after PCs kill it if they make a high enough medicine or nature check tell them that the plant could be used if prepared right to heal (1d4+1) hit points if consumed
I also built a deck with one card from each expansion, although Im not sure that qualifies as a theme
Universes Beyond releases have also brought more collectors into Magic through brands such as Final Fantasy, Marvel, Doctor Who, Assassins Creed, Teenage Mutant Ninja Turtles, and other crossovers
Errata and Rebalancing As if things couldnt get any more complicated, some cards have actually been changed after they were printed
If you can keep her on the field for a while, she could very well fish everyone you lost out of the discard pile
Ill be making the case for one of my favorites, especially in Commander