Harrow [Zendikar] 18 Set: Portal Second Age Type:

Set: Portal Second Age Type: Instant Rarity: Uncommon Cost: {W} Cast this spell only during the declare attackers step and only if you've been attacked this step

The turn player applies the following effect while this monster is on the field

you may change "target black spell" to "target blue spell

You can only use this effect of "Numeron Wall" once per turn

Harrow [Zendikar] 18 Set: Portal Second Age Type:Set: Zendikar Type: Instant Rarity: Common Cost: {2}{G} As an additional cost to cast this spell, sacrifice a land. Search your library for up to two basic land cards, put them onto the battlefield, then shuffle. The Roil redraws the world as it passes, leaving only the hedrons unchanged.