At the beginning of your upkeep, if an opponent controls three or more creatures, sacrifice this enchantment, search your library for up to two creature cards, put those cards onto the battlefield, then shuffle.
All creatures have vigilance. At the beginning of each player's end step, tap all untapped creatures that player controls that didn't attack this turn. This artifact deals damage to the player equal to the number of creatures tapped this way.
At the beginning of your upkeep, if there are four or more creatures on the battlefield, sacrifice this enchantment and destroy all creatures. They can't be regenerated.
With heavy heart, Urza doused one world's light to rekindle another's.
"He cocooned himself alone in his workshop for months. When he finally emerged, all broad grins and excited chatter, I knew he'd found his answer." —Barrin, master wizard
As an additional cost to cast this spell, sacrifice an artifact. Search your library for an artifact card, put that card onto the battlefield, then shuffle.
"I wonder how it feels to be bored." —Jhoira, artificer