Next patch so probably around June 26.
Missions usually are event-related and therefore are only available during events like Snowdown, Worlds, Halloween or as for now Lunar Revel. Sometimes when Skin lines are released there are special missions too. And recently Riot has started publishing missions for when a new champion is released, but those usually require you to play as, with or against that specific champion.
The Laning phase is the period of the game where the players, except for junglers ofc, typically remain in their respective lanes and farm minions to acquire gold or trade with their lane opponents to get kills or lane dominance. This phase usually lasts the first 15 minutes and is followed by the mid-game where teams start to group up to actively take objectives like towers and dragons.
I love Fiddlesticks, the terrifying scarecrow, wielding a scythe and summoning crowstorms in battle. Sadly his kit doesn't even come close to this apart from his ultimate.
Then there is Lissandra, the ancient ice queen, deceiving the other freljordian tribes into thinking the frostguard are peaceful, meanwhile preparing the return of the watchers.
Also Bard for being the weird and funny in-game, with cute meep followers, or Kalista for her ghostly theme.
Sry for my kinda late answer but I main Liss too and here's what I typically go for:
I really dislike ROA on Lissandra. I don't like how it just gives pure stats, despite them being good, like 100 AP etc. So I Usually go for Morellonomicon as the first item in most cases, since Lost Chapter's mana sustain is really good for the lane. When opposing an AD heavy team or Assasins like Kat or Akali in most cases I get Zhonyas afterwards, to dodge some of their burst or as a substitute when using your Ult for the stun. Otherwise, I would first build Hextech-Protobelt for better engage and mobility in general. To finish it up get Voidstaff and Rabadons. Situationally I swap one of the items(often Protobelt or Rabadons) with a Liandrys or Banshees, against heavy tanks and APs respectively.
For Runes, I choose Arcane comet - Ultimate hat(all of those are great though) - Transcendence(must-have) - and Gathering storm. Secondary comes Domination with Ingenious Hunter(great with Zhonyas and Protobelt) and Cheap shot.
Gl and hf in your games with her :D
Consider maxing E instead of Q and poke with auto-attacks. It's definitely an annoying match-up but if you can negate his poke with your E and poke him with your passive it's manageable to not lose or win against him. As usual against a Zed, rush Zhonyas and run Barrier for when he all-ins. When he ults you, shield yourself and hit your shockwave, then Q-W and kite with aa. Just a skillmatch-up, but kinda in favour of Zed.
Right below that:
"Applies spell effects as an area of effect ability.
Spell vamp is reduced to one-third effectiveness."
I tested it a bit: the first two q attacks dealt 404 total damage and it healed me for about 29. This makes about 14% heal so I guess you actually heal for the full amount.