Using a play test card as my commander in a casual game, slivdrazi monstrosity. With that and mana echoes on the field along with any two other slivers, does it create and infinite combo after tapping/paying 3 to create a eldrazi token from Slivdrazi (gatherer)
You pay 3, create a token, Mana Echoes triggers and gives you 4 colorless. You use 3 of those to create another token, getting 5 colorless mana out of Echoes, and so on.
You pay 3, create a token, Mana Echoes triggers and gives you 4 colorless. You use 3 of those to create another token, getting 5 colorless mana out of Echoes, and so on.