Slaughter [Exodus] Construct "Impress me

"Impress me

Set: Legends Type: Artifact Creature — Shapeshifter Rarity: Rare Cost: {4} {0}: Change Sentinel's base toughness to 1 plus the power of target creature blocking or blocked by Sentinel

Set: Modern Event Deck 2014 Type: Instant Rarity: Uncommon Cost: {W} Exile target creature

Set: Time Spiral Type: Creature — Spirit Rarity: Rare Cost: {B}{B} Haste

Whenever Sapling of Colfenor attacks

Slaughter [Exodus] Construct "Impress meSet: Exodus Type: Instant Rarity: Uncommon Cost: {2}{B}{B} BuybackPay 4 life. (You may pay 4 life in addition to any other costs as you cast this spell. If you do, put this card into your hand as it resolves.) Destroy target nonblack creature. It can't be regenerated.