Nasty card flow, and you'll load this up with other Threaten effects, and you can add in Sacrifice stuff too like Goblin Bombardment or Viscera Seer to "Steal N' Sac!" I love this so much
Lands don't cost any mana, but you can usually only play one a turn, and like other MTG card types, you can only play them at Sorcery speed
As of 2024, there have been over 100 MTG sets released and more are always being made, so there is a degree of certainty that your favorite character or IP will eventually find its way into the gathering, especially with the growth of Universes Beyond crossover sets in recent years, including the mighty MTG Lord of the Rings set
If a face-down creature dies but the permanent card it becomes in the graveyard leaves the graveyard before Yarus, Roar of the Old Gods's last ability resolves, it will not return to the battlefield
If you control three or more creatures, it gets +4/+4 until end of turn instead
Adding three colored mana for free is extremely powerful, even if its restricted to being used to cast your Commander