If your main goal is to make Legacy more affordable and accessible, however, there are other, better, easier ways to do it that dont involve fighting against WotCs seemingly unbreakable oath
Brawl Legal Vintage Legal Timeless Legal Commander Legal Pauper Legal Oathbreaker Legal Penny Not Legal Toolbox Buy This Card Notes and Rules Information for Relentless Rats: Because damage remains marked on a creature until the damage is removed as the turn ends, nonlethal damage dealt to one Relentless Rats may become lethal if another Relentless Rats leaves the battlefield during that turn
The downside is that non-green colors don't offer much in the way of Elves themselves, with Grand Warlord Radha, Tolsimir, Friend to Wolves, and Golgari Findbroker likely being the best of the bunch, even though none of them seem that great for our deck and would probably be one- or two-ofs even if we were in their colors
Green Suns Zenith [The Gold Standard of Green Tutors] Green Suns Zenith is the gold standard for green creature tutoring
Finally, it has all the best colors for group hug cards, meaning youll only miss out on a few of the good 5-color cards listed here like Kenrith
Kazuul Warlord can buff our Allies with +1/+1 counters on Ally EtB and what matters is that those counters stay on our Allies so they can stack an make our army powerful