Then all creatures are sacrificed by their controllers simultaneously
1v1 Magic is a zero-sum game which locks you into the brutal calculus of how to gain the most advantage over the other player at all times
But the spell/creature side of these are more efficient than the average from the Zendikar Rising modal double-faced cards and the mono-colored ones can enter untapped if you pay life, so I think many will find a home, and not just in Goblin Charbelcher decks
#6: Yavimaya, Cradle of Growth Urborg, Tomb of Yawgmoth is a card that has seen a lot of play over the years
The only requirement was that the artwork had to depict a white-aligned mage sacrificing themselves to cast the most epic protection spell. The exact nature of the spell wasnt specified, but it had to feel grand and powerful
This makes it an incredibly resilient threat, and even a dangerous Aggro card if you cheat it into the graveyard early and cross your fingers