Necrosavant

, Sacrifice a creature: Return Necrosavant from your graveyard to the battlefield. Activate this ability only during your upkeep.

Relic Ward

You may cast Relic Ward 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.
Enchant artifact
Enchanted artifact has shroud. (It can’t be the target of spells or abilities.)

Necrosavant

, Sacrifice a creature: Return Necrosavant from your graveyard to the battlefield. Activate this ability only during your upkeep.

Painful Memories

Look at target opponent’s hand and choose a card from it. Put that card on top of that player’s library.

Shallow Grave

Return the top creature card of your graveyard to the battlefield. That creature gains haste until end of turn. Exile it at the beginning of the next end step.

Kaervek’s Torch

As long as Kaervek’s Torch is on the stack, spells that target it cost more to cast.
Kaervek’s Torch deals X damage to any target.

Blind Fury

All creatures lose trample until end of turn. If a creature would deal combat damage to a creature this turn, it deals double that damage to that creature instead.

Cloak of Invisibility

Enchant creature
Enchanted creature has phasing and can’t be blocked except by Walls. (It phases in or out before its controller untaps during each of their untap steps. While it’s phased out, it’s treated as though it doesn’t exist.)