1.Cassiopeia can trigger "Manamune." The passive of Manamune activates with basic attacks or single-target skills. Teamed up with Archangel's Staff, its strength is not explicitly stated, but it is confirmed to trigger. A JAG player in high-level Korean matches used this strategy, although it happened quite a while ago.
2.Duskblade of Draktharr can scout bushes with her passive. Its passive lasts for 5 seconds after being seen by enemies. Check the buff bar; if its icon starts to circle, and there's no one around her in the bush, it means she is present in the grass.
3.Frozen Thrall, released by Lissandra, will always fly toward the two nearest enemy champions, regardless of whether they make contact. The closest distance refers to the Thrall's movement distance, not the straight-line distance between two points. Therefore, pressing the item can roughly determine the enemy's location at that moment. The maximum range of the ghosts is 3500 units.
4.Spirit Visage's passive is useful for healing in fountains. It can potentially allow you to leave the fountain 2 seconds earlier when low on health. However, it's not very significant, considering you also have Homeguard.
5.Lifesteal can be enhanced by various factors (not an exhaustive list):
- Spirit Visage
- Critical strikes
- Critical strike bonuses
- Frostfire Gauntlet (only primary target counts)
- Trinity Force
- Vayne's Q
- Ezreal's Q
- Miss Fortune's passive
- Jhin's fourth shot execute (exception: Muramana and Duskblade of Draktharr do not work)
The effectiveness is calculated based on the damage dealt. Target armor and your armor penetration also affect this.
For example, with 20% lifesteal from Bloodthirster, if Jhin's fourth shot deals 1000 damage, lifesteal is 200.