I was thinking about a sick ultimate for an upcoming champ or something and i came up with this.
Throw a projectile (skillshot) spike in direction that travels .... distance. Deals damage to all enemies hit dealing less for each consecutive enemy hit. Champions hit are skewered and taken with the spike until it stops or hits terrain. If it hits terrain all champions skewered are stunned.
I'm thinking a Centurion like champion with a battering ram on his back, so here's my (basic) idea for his abilities
Passive - March As you move you gain bonus damage up to X which is expended on your first basic attack.
Q - Batter N' bruise Swings with his battering ram which knocks the enemy back and gives him a burst of movement speed.
W - Undaunted Ignores physical damage for a brief time before lashing out towards your cursor, slowing and damaging enemies you pass through.
E - Trojan horse A Trojan horse falls from the sky and rolls forward slowly, the horse acts as terrain and allies can jump inside to become untargetable until it stops and burst open. Dealing more damage the more champions inside and stunning enemies within a short distance of the horse.
R - Siege ram He pulls out his battering ram and charges, pulling all enemies hit with him to the end of the range, stunning enemy champions if he hits terrain which will also end his charge early.
So a ult version of Vayne's E?
