The cost is an alternative cost, so it can't be combined with any other alternative costs
The tokens created by a single instance of myriad all enter at the same time
Artificer's Intuition Do-It-Yourself Seraph Enlightened Tutor Fabricate Goblin Engineer Guidelight Pathmaker Hoarding Dragon Inventors' Fair Iron Man, Titan of Innovation Kuldotha Forgemaster Loyal Inventor Magda, Brazen Outlaw Moonsilver Key Nahiri, the Harbinger Oswald Fiddlebender Reckless Handling Repurposing Bay Reshape Scour for Scrap Sojourner's Companion Sphinx Summoner Tezzeret the Seeker Tezzeret, Cruel Captain Tinker Transit Mage Transmutation Font Transmute Artifact Treasure Mage Tribute Mage Trinket Mage Trophy Mage Urza's Saga Vexing Puzzlebox Whir of Invention
While you will need to activate it every turn for this to work, once you have an established board state, that's not a big ask whatsoever
While Wizards have been keeping details about this trophy close to their chest, we do know it houses a Planeswalkers spark
You can also use the equipment Darksteel Plate and Hammer of Nazahn will give Holga indestructible, letting you freely attack into just about any board state
