One of them is when your mana doesnt come only from lands, but from creatures, mana rocks and other sources too
Im willing to put one of each into the main deck for testing, and more, should they be a good fit
Hopefully, someday we get an online Commander video game, or add EDH to Arena, so be sure to familiarize yourself with Arena Tutor for when that day comes
The key is that the only formats where Yawgmoths Will has been legal as a four-of have tended to include an absurd level of ultra overpowered cheap tutors
Creatures target opponent controls lose first strike and double strike until end of turn
There are plenty of the best cards that aren't necessarily represented in the decks above, but keep in mind that the meta and the best decks in Pocket are never so unstoppable that you'll always be guaranteed a 100% win rate