Erratic Portal

(T: Add W.)

Destroy target artifact or enchantment.

T: Add C. T, Sacrifice this land: Destroy target nonbasic land.

(T: Add W.)

Target creature gets +3/+3 and gains flying until end of turn. (It can't be blocked except by creatures with flying or reach.)

Flying Whenever this creature becomes the target of a spell or ability, this creature gets +0/+3 until end of turn.

Buyback 3 (You may pay an additional 3 as you cast this spell. If you do, put this card into your hand as it resolves.) Prevent the next 3 damage that would be dealt to target creature this turn.

All Sliver creatures have "2: This creature gets +0/+1 until end of turn."