Considering that you'll open one copy of Heliod, Sun-Crowned roughly every 3.5 booster boxes, this means that the supply of the Secret Lair version of Heliod, God of the Sun (again, based on our estimate) is roughly the equivalent of 175,000 booster boxes of Theros being opened (at $100 a box, about $17.5 million dollars worth of boxes)

Avalanche Riders Avengers Disassembled Barbarian Riftcutter Boom // Bust Bumi Bash Cleansing Wildfire Craterize Devastate Dwarven Driller Dwarven Landslide Earth Rift Faultgrinder Fire Snake Flowstone Flood Geomancer's Gambit Goblin Gardener Goblin Settler Implode Into the Maw of Hell Keldon Arsonist Lay Waste Melt Terrain Molten Rain Ogre Arsonist Pain // Suffering Rain of Rust Ravaging Horde Raze Roiling Terrain Rubble Reading Sandworm Scorch the Fields Seismic Mage Seismic Shift Seismic Spike Shaleskin Plower Star of Extinction Stone Rain Sundering Eruption Survey the Wreckage Tectonic Rift The Fall of Kroog Touch and Go Vandalize Volcanic Awakening Volcanic Upheaval Wake of Destruction
I can play this game for five minutes, open some packs, and close the app feeling like I got something out of it
Luckily this is better than most of those, it just means it is less of a step up from a swamp than it would have been some years ago
Consider what cards in your deck permanently interact with your opponent's cards