The main takeaway is this: SPE cards are really valuable, MAR reprints are mostly good, while Marvels Spider-Man (SPM) is just okay in value, outside of a few rares and mythics
During the Standby Phase of your next turn after the 5th Spell Counter is placed on this card: You can send this face-up card with 5 Spell Counters on it to the Graveyard
Herd Heirloom A viable mana rock that works for multi-colored creature decks, and it even offers a second ability that generates card advantage or helps kill your opponent (there are so many good creatures with at least 4 power)
Around Iron Boulder are other pools of energy and even some plants, as if it were standing in some sort of post-apocalyptic scenario
Ezuri, Stalker of Spheres Ezuri, Stalker of Spheres is probably better in the 99 of a proliferate Commander deck, rather than at its helm as a Simic commander
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