A blue flame flies from the caster to strike the first unit in its path. The target suffers D6 S4 hits. Normal armour saves apply.
Line of Sight
Note that the spell cards in the Warhammer Armies Chaos supplement do not have 'Lasts one Turn', or 'Line of Sight' included as summary headlines. The descriptions on the cards should be clear enough, but we have included appropriate remarks in the following summaries. The Blue Fire of Tzeentch requires line of sight.