Harmonious Hydra

Choose target player who is playing a deck containing red or white cards, You and the target become united. As long as you are united,
you and the target play together as a team. You
pool life totals and share land/mana, and make decisions together and are immune to
each other. One target is selected, this card transforms into an create with it's abilities with
health equal to it's CMC. You remain a team
until this card leaves the field. Others can directly attack it, this card can not attack or