Eidolon Hydrolyst

Adaptability (Whenever this card receives damage,
it can no longer receive damage from that source or
from a source with the same name as long as it is on
the battlefield.)
Other nonlegendary sentient creatures you
control can't be destroyed by spells or abilities.
If Eidolon Hydrolyst is put into a graveyard from anywhere, shuffle it into its owner's library. If it
was destroyed, return it to its owner's hand.