Book Burning

Any player may have Book Burning deal 6 damage to them. If no one does, target player mills six cards.

Lava Blister

Destroy target nonbasic land unless its controller has Lava Blister deal 6 damage to them.

Risk Factor

Target opponent may have Risk Factor deal 4 damage to them. If that player doesn't, you draw three cards.
Jump-start (You may cast this card from your graveyard by discarding a card in addition to paying its other costs. Then exile this card.)

Skullscorch

Target player discards two cards at random unless that player has Skullscorch deal 4 damage to them.

Molten Influence

Counter target instant or sorcery spell unless its controller has Molten Influence deal 4 damage to them.