is a Burst Mage in League of Legends. However, she is currently more of a Battle Mage. She has a low cooldown damage ability. She has low range abilities. However, because she does not have any shield or sustain abilities except for her spells, she is not classified as one. Her CC contribution is not good enough to build more tanky, as she already has good one-time-use defense ability.
Passive: Iceborn Skin
While under a immomolization CC effect, she will not receive any addition CC from enemies. In addtion, if she is under a CC effect, she heals herself by 2% of her missing health. Cooldown: 2 second/1 for self-CC.
Note: R, Stopwatch and Zhonya Hourglass would trigger the passive heal twice.
Q : Ice Shard
Q now deals addition 20% damage if the first target hit is CC-ed.
W : Ring of Frost
Now temporarily root Lissandra for 0.5 second. Increase enemies root to 1.3/1.4/1.5/1.6/1.7 second. Take reduce damage for 0.5 second.
E : Glacial Path
R : Frozen Tomb
Her new passive allow her to ignore overlap CC. Because of this, use W before getting any addition CC (similar to Fiora, stand still to Ripstote). This allow her more survival ability.
In addition, using W, R, Stasis or under any CC from ally and enemies will heal her. This allow her to stay in fight longer.
Instead of healing, passive can change to reduce basic abilities cooldown by 2 second. This allow W use as a combo ability. Q W Q to gain the bonus damage from CC-ed target. She also make use of CDR a lot. At level 18 and 40% CDR, her W cooldown is 6, which is reduced to 4 immediately after use. This allow her to make more play: E2 R Q E1 W E2.
Other buff option
I wonder what Rune work bests on her. Here is an idea for a Resolve Rune.
Resolve Tier 3.
Standing still for at least 2 seconds or getting Hard CCed gives you Haste. Haste: Start moving gives you a 25% speed buff decays over time for 2 second. In addition you gains 15% Tenacity in the same duration. 10 second cooldown.
This rune works for junglers who like to stand still and wait for the perfect moment. Champions that has self - stun abilities like, , , , can use this also. Stopwatch lovers would also love this. The move speed allow them to reposition after the Stasis effect and the Tenacity would allow to reduce the CC-ed effect you would get immediately after Stasis.