Sphere Magus

(You may only have up to four cards with "[Heal] HEAL" in a deck.) :When another <Oracle Think Tank> rides this unit, you may call this card to . :When this unit boosts ([Boost]), the boosted ([Boost]) unit gets +3000 until end of that battle, and at the beginning of the end phase of that turn, return this unit to your deck, and shuffle your deck.