mtg cave cards Cavernous Maw Activate only as a sorcery. The Lost Caverns of Ixalan:

I cant wait to give it storm with Storm, Force of Nature

Rootwire Amalgam Autonomous Assembler Arcane Proxy Skitterbeam Battalion Steel Seraph Spotter Thopter Hulking Metamorph Iron-Craw Crusher Phyrexian Fleshgorger Fallaji Dragon Engine Combat Thresher Rust Goliath Depth Charge Colossus Woodcaller Automaton Goring Warplow Blitz Automaton Boulderbranch Golem Cradle Clearcutter Frogmyr Enforcer Warzone Duplicator Forgefire Automaton Best Prototype Cards The recursion at no extra cost makes Forgefire Automaton ripe for value in sacrifice engines

While you definitely wont consistently get the card draw, treasure, and life gain all at once, odds are that youll at least be able to get at least 2 of them regularly

It also comes with backup, which fits super nicely with the counter-doubling ability