This is a great mana sink when you dont have other plays to make, but if players cannot make the most of The Earth Crystals activated ability, then the Crystal is not worth playing
No, it's not, we're pairing with Green because we're building around a Green card, but we'd pair with Green even if we didn't have to
Syr Armont, the Redeemer Selesnya enchantment decks can be very strong, and if you want to have an anthem on hand at all times in one of these enchantment decks Syr Armont, the Redeemer gives you the option
It doesnt take much to make sure you have a non-Toy creature attacking and itll continuously grow your battlefield with each attack
Some even come with built-in synergies that make them even better, like pitching Lrien Revealed to fuel Force of Will