User blog comment:Emptylord/Custom champions/Oberon the Faerie King/@comment-78.154.82.149-20121210160202/@comment-3974211-20121210173112

Oberon does not "store" spells like the Invoker. Instead, he uses a system similar to, where the [R] button casts the spell.

To expand on his ultimate's mechanic:
 * Invoke uses a stock system, like.
 * This allows him to cast multiple spells in succession.
 * The flow of fighting with Oberon will feel more similar to playing Magicka than playing the Invoker.
 * This is because you have to combine your spells each time you cast, unless you intend to use the same ability twice in a row.
 * Speaking of, he will have abilities similar to and  that are designed to be chained.