You might expect a creatures-only restriction here, given the lore, but abilities from artifacts, enchantments, and planeswalkers are fair game too
What is Bounty in MTG Commander
Eternities is evocative of The Blind Eternities, a space in Magic's multiverse that exists between planes, in which the Eldrazi reside
The probability starts below 10% for a three-land hand
Advanced Search Sets Random Syntax Anurid Barkripper Anurid Brushhopper Anurid Murkdiver Anurid Scavenger Anurid Swarmsnapper Bellowing Crier Berta, Wise Extrapolator Bloated Toad Bogwater Lumaret Burrog Banemaker Burrog Befuddler Chub Toad Clement, the Worrywort Clifftop Lookout Croakid Amphibonaut Crocanura Dour Port-Mage Dreamdew Entrancer Excavating Anurid Flubs, the Fool Frog Butler Frog-Squirrels Froghemoth Frogmite Frogmyr Enforcer Galloping Lizrog Genghis Frog Gigantoad Glarb, Calamity's Augur Gorma, the Gullet Gray Slaad Grolnok, the Omnivore Halo Hopper Haze Frog Helga, Skittish Seer Hezrou Jade Avenger Leapfrog Lilysplash Mentor Long River Lurker Mistbreath Elder Morgue Toad Noxious Toad Octomancer Omnibian Papercraft Decoy Pet Avengers Plaxcaster Frogling Poison Dart Frog Pollywog Prodigy Pollywog Symbiote Pollywog Symbiote Pond Prophet Psychic Frog Punk Frogs Rampant Frogantua Skyskipper Duo Species Gorger Splash Lasher Spore Frog Spring Splasher Steeple Creeper Stickytongue Sentinel Sunshower Druid Textbook Tabulator Thalia and The Gitrog Monster The Gitrog Monster The Gitrog, Ravenous Ride Three Tree Scribe Treeguard Duo Trollbred Guardian Twenty-Toed Toad
The same is true for spells you control and nonland cards you own that aren't on the battlefield
