Sentinel
4-cost Riftbeast · Vanguard · Invoker champion in TFT Set 18.
Azure Shockwave: Gain Shield for seconds. Slam the ground, sending a fissure in the direction of the most enemies. Enemies hit are briefly knocked up, take magic damage, and are Mana Reaved for. Blue Buff: Each time Sentinel casts, allies gain Mana Regen. Mana Reave: Increase the Mana cost of the next Ability cast.