It's easy to summon if you have Double Coston. You could also have Deep Sea Diver to add EB Immortal to your hand. My thing is, is what i said below about 3 card zones and the fact you have to leave a Field Spell on the field plus, targeting up to 3 cards you control to return to your deck.
Not worth that 2k LP loss. At any rate, you will only gain about 2000atk from it's effect and without getting rid of a Field Spell and unless your opponent relies on cards effect that requires it to stay in your hand.