Zendikar Rising

Allied Assault | Instant | | Up to two target creatures each get +X/+X until end of turn, where X is the number of creatures in your party. (Your party consists of up to one each of Cleric, Rogue, Warrior, and Wizard.) | Josh Hass

Silundi Vision | Instant | | Look at the top six cards of your library. You may reveal an instant or sorcery card from among them and put it into your hand. Put the rest on the bottom of your library in a random order. | Randy Vargas

Kazuul's Fury | Instant | | As an additional cost to cast this spell, sacrifice a creature. Kazuul's Fury deals damage equal to the sacrificed creature's power to any target. | Karl Kopinski

Khalni Ambush | Instant | | Target creature you control fights target creature you don't control. (Each deals damage equal to its power to the other.) | Grzegorz Rutkowski

Roiling Regrowth | Instant | | Sacrifice a land. Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle. | Jonas De Ro