Here are my options: Ash Barrens Canyon Slough Bloodstained Mire Temple of Malice Myriad Landscape Forgotten Cave Desert of the Glorified Smoldering Crater Polluted Mire Phyrexian Tower Agadeem's Awakening Spikefield Hazard Step 4: Put It All Together Now that you have all your potential cards picked out you need to start assembling your deck
Green decks are able to get away with very high cost cards, both from its ability to ramp and that it often rebalances a long stretching mana curve with lots of stuff at the low end
Each turn you'll get a Clue, which is basically an extra card and a sacrifice trigger
Rites of Initiation can also be particularly scary in a Squirrel deck
With all of the cheap mana rocks in Vintage, it becomes a terrifying instant-speed draw spell that you can easily power out early
Since it's a legendary creature, there is a big chance that you won't see it much outside EDH, and the only other format that could use Myrel effectively would be Modern