Sabrina, the (insert cheesy title)
Inspired by DotA's Invoker (and not intended to be anywhere near as flexible).
Sabrina, unlike Invoker, has only 2 orb slots instead of 3. However they are still the basis for her Ultimate, which changes between 6 different spells, all of which are tied to the same cooldown. This is basically a version of LeBlanc's mimic that changes based on her 2 most recently cast abilities. The abilities the Ultimate may cast are listed in the individual skills, with the actual description on the Ultimate.
Passive: Energy Transmutation
Sabrina gains an on-hit effect based on her most recently cast basic ability. Cooldown of 6 seconds.
Attribute: Earth - Sabrina's next basic attack slows the target's movement and attack rate by 5% per rank for 3 seconds. Attribute: Water - Sabrina's next basic attack inflicts a damage over time effect that deals 10% of her AP in magic damage over 5 seconds. Attribute: Air - Sabrina's next basic attack increases her attack speed by 5% per rank and deals an additional 4 magic damage per rank for 4 seconds.
Q: "Attribute: Earth"
Sabrina exchanges her oldest orb for an Earth Orb. Each Earth Orb increases her bonus armor by 2/4/6/8/10.
Spell Combinations: Earth-Earth: Quake Earth-Water: Mudslide Earth-Air: Sandstorm
Cooldown: 20/16/12/8/4
W: "Attribute: Water"
Sabrina exchanges her oldest orb for a Water Orb. Each Water Orb increases her HP/5 by 1/1.5/2/2.5/3.
Spell Combinations: Water-Earth: Mudslide Water-Water: Geyser Water-Air: Typhoon
Cooldown: 20/16/12/8/4
E: "Attribute: Air"
Sabrina exchanges her oldest orb for an Air Orb. Each Air Orb increases her movement by 3/4/5/6/7%.
Spell Combinations: Air-Earth: Sandstorm Air-Water: Typhoon Air-Air: Gale
Cooldown: 20/16/12/8/4
R: "Fuse Attributes"
Casts a spell based on her current attribute combination. Spell rank is based on this Skill's rank.
Cooldown: 25/20/15/10 (shared by all abilities this spell can cast.)
Quake (Earth-Earth): Target area (400 units wide) tremors for 5 seconds. Deals 20/40/60/80 (0.3 AP) magic damage per second, increased by 25% for every second that a unit remains in the area. (so this spell would deal, at rank 1, 20-25-30-35-40 with 0 AP assuming anything sits in the area for the full duration.) Geyser (Water-Water): Target area (200 units wide), after a 2 second delay, knocks up all enemies for 1 second, dealing 55/90/135/180 (0.7 AP) magic damage. Gale (Wind-Wind): Linear skill shot (200 wide, 800 range, very fast) deals 40/80/120/160 (0.4 AP) magic damage and slows the movement of all enemies struck by 10/20/30/40%. Mudslide (Earth-Water): Linear skillshot (400 wide, 500 range, Very slow) that snares all enemies hit for 1.5 seconds and deals 50/90/130/170 (0.8 AP) magic damage. Sandstorm (Earth-Air): Creates a raging whirlwind of sand (300 range) around Sabrina for 5 seconds, dealing 30/60/90/120 (0.4 AP) magic damage per second. Typhoon (Water-Air): Creates a vortex of water and wind (500 range) around Sabrina for 5 seconds. Enemies within range have movement slowed 20% and lose 5/10/15/20% of their total armor and magic resist.