I control Krasis Incubation enchanting my Floodtide Serpent. My mana pool is empty and I have no way to gain more mana this turn. The only enchantment I control is Krasis Incubation. Floodtide Serpent does not have summoning sickness.
Can I attack with Floodtide Serpent by returning Incubation Krasis to my hand?
Here is what I have found so far, to help you guys answer my question.
Rule 508 describes the declare attackers step in depth. 508.1 is broken down into a few steps. Here are the parts I found to be relevant.
- 508.1c The game checks for restrictions. Floodtide Serpent has a restriction that I am disobeying. Krasis Incubation has a restriction that I am disobeying.
- 508.1d The game checks for requirements. I have none.
- 508.1g-i I determine my total cost for attacking. I bounce Krasis Incubation to pay this cost.
If the game backs up at 508.1c, then Floodtide Serpent cannot attack. However, if this is the case, it would appear that Floodtide Serpent could never be allowed to attack, because his cost can never be paid prior to reaching 508.1g-i.
If the answer is that he cannot attack with Krasis Incubation, then I couldn't describe any situation in which he could attack.