{T}: Target artifact creature’s controller sacrifices it. That player may search their library for a noncreature artifact card, put it onto the battlefield, then shuffle.

Target creature’s controller sacrifices it, then creates X 1/1 green and white Elf Warrior creature tokens, where X is that creature’s power.

You may cast Necromancy as though it had flash. If you cast it any time a sorcery couldn’t have been cast, the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step.

When Necromancy enters the battlefield, if it’s on the battlefield, it becomes an Aura with “enchant creature put onto the battlefield with Necromancy.” Put target creature card from a graveyard onto the battlefield under your control and attach Necromancy to it. When Necromancy leaves the battlefield, that creature’s controller sacrifices it.

0: Reveal the top card of your library and put it into your hand. Sarkhan the Mad deals damage to himself equal to that card’s mana value.

−2: Target creature’s controller sacrifices it, then that player creates a 5/5 red Dragon creature token with flying.

−4: Each Dragon creature you control deals damage equal to its power to target player or planeswalker.