mtg rakdos commander deck Tier 1 Madness Pauper - Black Red - Custom Built - Magic The Gathering - The Gathering Rakdos, Lord of Riots |

Paying 10 mana to untap all your lands is a pretty dangerous ability to try and use in Standard, but in Commander you've got a lot more life to work with and can potentially leverage this effect in a lifegain deck for tons and tons of ramp

Someday

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But this isn't a combo deck that relies on having exactly the right cards - it uses a lot of ramp abilities to increase your ink and card draw abilities to stock your hand

Lets call that 50% likely which is again, a significant rounding up on things

Search your library for a basic Plains card, reveal it, put it into your hand, then shuffle