WOOOW, (If you don't want her abilities to be spoiled (maybe you want to wait for the "champion approaches" version, or watch the spotlight), don't read on.)
Q: Empowers her next autoattack to deal additional magic damage and stun the target for 1.5 seconds.
W: Leona creates a shield that buffs her armor and MR for 3 seconds. After 3 seconds, the shield emits an explosion (like Sion's shield), and if any enemies are hit by it, the buff stays up for another 3 seconds.
E: Skillshot. Leona throws a sword of light that deals damage to enemies it passes through (including minions) and allows Leona to teleport to the last Champion hit by it.
R: Basically like Dark Matter, but bigger. Leona calls down a burst of sunlight that has two areas of effect - an inner circle and the outer circle. Anyone hit by it takes damage, and enemies in the inner circle are stunned while those hit by the outer blast are slowed by a large amount.
insta buy FTW???