mtg meren commander deck of Clan Nel Toth If that cards converted mana cost is less than or equal to the number of experience counters you have Amazon.com: Meren of Clan Nel

You have a certain chance to hit the mythic, but then you are 50/50 on which version youre going to get, making each version half as common

Engle Sources: Abzan Ascendancy, Afterlife, Avacyn's Collar, Benevolent Offering, Bishop of Wings, Custodi Soulbinders, Dauntless Cathar, Doomed Traveler, Drogskol Cavalry, Elgaud Inquisitor...

The Anurid were originally beast creatures but were later errata'd to be frogs

Simic Sky Swallower / Sagu Mauler You can't win the game without dropping someone's life down to 0, unless you have a funky win-con or milling thing going on, but not generally

Borderless Stellar Sights Lands Ready to go sightseeing in the stars

You can then choose to cast them without paying their mana costs, and yes, you can also choose to stack all of the nonland spells in whatever manner you prefer