Enduring Tenacity won't have those creature types when its last ability returns it to the battlefield because it won't be a creature
Additionally, collector numbers for ripple foil tokens with the MH3 set code as well as the front and back side order in which tokens appear differ in Creative Energy Collector's Edition, where tokens appear as follows: 1 Energy Reserve (Helper) // Servo token 1 Aetherborn // Servo token 1 Illusion // Servo token 1 Phyrexian Myr (Brudiclad) // Servo token 1 Treasure // Copy token 1 Gremlin (1/1) // Copy token 1 Copy // Gremlin (1/1) token 1 Thopter // Copy token 1 Construct (6/12) // Myr token 1 Aetherborn // Thopter token See the tokens and helper from Creative Energy and Creative Energy Collector's Edition (tokens and helper) in the Modern Horizons 3 Card Image Gallery
But the most obviously broken aspect of this unparalleled flexibility in timing shows up when the sacrifice decks do what they do best: combo off
This cards multiple abilities direct damage, lifegain, killing artifacts, and destroying enchantments makes it very versatile and gives you good mana sinks if your hand is running low on cards
In the end, my guess is that much like Keruga, Jegantha, the Wellspring isn't going to show up in most decks, but it will show up in one or two and will probably be very good in those shells
