Hmm this one boggles the mind a bit. The card says:
Action: Exhaust Support of the Eagles to choose an Eagle ally. Until the end of the phase, attached hero adds that ally´s attack or defense (choose 1) to it´s own
Take this card at face value and it would mean that no build-in game mechanic (excluding other cards for this example), would be able to prevent this effect from taking place. But the following questions still keep gnawing at the back of my mind:
1) Can an exhausted eagle still give it´s bonus? (I´d say that based on the wording it doesn´t matter wether the eagle is exhausted or not)
2) If an eagle dies before the end of the phase (shadow card or planned suicide defense) does it still give it´s bonus or does the bonus stop the moment the eagle dies?
Especially the 2nd question has me puzzled. Because the rules state that once a card is taken out of the game, it can no longer affect play or be affected (unless a card specifically says it affects a card outside play). However the eagle has already bestowed it´s bonus and it could thus be reasoned that it isn´t affecting the game anymore but it is indeed "support of the eagles" which is the affecting card. The fact that it just happens to be a now dead eagle that is used for calculations, until the end of the phase, is thus irrelevant.
Any and all thoughts are welcome