(Riot can use this Champion idea)
1: Tesantyl is an AP/AD assasin in the midlane. She isnt a oneshot Champion like other assasins, she has to be near there enemys to prepare her deadly combo. Shes good in 1 vs 1 and if you play carefully you can also win vs more than one enemys at the same time. In my eyes shes a very skillful champion who need much practical knowledge.
HP: 470 + 65 per Level=1575 HP at lv 18
Mana: 275 + 40 per Level= 955 Mana at lv 18
AD: 60 + 2.3 per Level= 99.1 AD at lv 18
AS: 0.7 + 2.5% per Level= 0.9975 AS at lv 18
HP.reg: 6 + 0.5 per Level= 14.5 HP.reg at lv 18
Mana.reg: 0.75 + 0.75 per Level= 13.5 Mana.reg at lv 18
Armor: 30.5 + 1.5 per Level= 56 Armor at lv 18
MR: 30 + 0.5 per Level= 38.5 MR at lv 18
If Tesantyl is in the range (radius 500) of an enemy champion for at least 2.5 seconds, the next normal attack within 2sec. on this champion is a dash to him with a attack range of 500. This attack deals 6-108 (1-18) + 100% AD + 30/40/50% AP (Lv 1/11/16) physical damage, triggers onhit effects but cant crit. Then it cant be used for 10/9/8sec. (1/11/16) on the same champion. For example: If your are close to several enemys you can dash around.
Tesantyl jumps in the air for 1sec. and create a Novasphere at the selected location (Radius 250), which deals 40/70/90/120/150 (+ 50% AP) magical damage to all enemys. The sphere will stay there for 5/6/7/8/9sec. and has a radius of 500. If Tesantyl dashes with her passive-attack, the Dash of her E or with the dash of her R through the radius of the sphere then she will explode and deal to all enemys into a 500 radius around the sphere
40/70/ 90/120/150 (+ 75% AP) magic damage.
Cooldown: 18/17/16/15/15sec. Range: 750/750/750/800/800 Cost: 40/50/60/70/80 Mana
Tesantyl let her hands and feets glowing with cosmic fire for 3/3/3/4/4sec. During this time, she gains +10/15/20/25/30 AD and her normal attacks on a enemy gives them 1 stack of "Cosmic Flames". These stacks hold 2sec. And can be refreshed by new stacks. At the end of the 3/3/3/4/4sec. all stacks on each opponent will be activated. These opponents receive -5/6/7/8/9% magic resistance and armor for 3sec for each stack against the next ability or the next passive-attack of Tesantyl (ONLY Tesantyl ignores the armor and mage resistance of the opponents.)
Cooldown: 18/16/15/14/13sec. (after the buff) Cost: 30/40/50/60/70 Mana
Tesantyl can select a direction and generates a radius of 500 around her for 2.5sec. which she must remain until the ability ends. In this radius she gains +20/25/30/35/40% attack speed. After the 2.5sec. she dashes in the selected direction, dealing 20/30/40/50/60 (+75% AP and 75% AD) magical damage to all enemys she hits. You can go trough terrain with the dash.
Cooldown: 20/19/18/17/16sec (after the dash) Range: 500 Cost:50/65/75/85/90 ________________________________________________________________________________________________________________
R:~Speed of light~
Tesantyl runs with 770/885/1000 movementspeed into the selected direction. She can´t be slowed during the abilitie. In the target direction, you can click on an enemy and do your passiv-attack on him, then jump into the air, and then deal 100/150/200 (+50% AP) up to 150/200/250 (+75% AP) magical damage to all enemys in a 90 degree cone in the direction of the enemy. The second damage is depending on the distance covered. She will then land 500 units away from the first attacked target. (She can go trough terrain during the run.)
Cooldown: 120/110/100 Range: 1500/2000/2500 Range of the cone: 600/700/800 Cost: 120/110/100 Mana
Thats it with my champion concept. Im sorry if I have some mistakes in the text, Im german^^.
Thanks for reading the concept;) Bye.