Get a free biscuit every 3 minutes, until 12 minutes. Biscuits heal and permanently increase your max mana.
Guardian is a great mid to late game support keystone that allows you to take aggressive fights with [W] shield. The burst of movement speed also allows you to lantern in your jungler for an easy gank.
Bone Plating is a great early lane phase rune that will empower your ability to survive poke and take early game trades.
Second Wind's mid-fight health sustain is fantastic for those early all-ins after landing a hook. The health will let you stick to the target and trade damage effectively.
Unflinching allows you to stick to your target after [E]ing them for repeated autos and the damage needed for the kill.
Cosmic Insight is an all-around great rune choice as the CDR empowers your strong utility and the Summoner CDR grants you more safety an opportunity for Flash engages.
Biscuit Delivery's sustained mid-fight healing is great for early all-ins when you land a hook and are absorbing a lot of front-line damage.