Io

Bestow {1}{w}
If a source would deal damage to enchanted
creature, prevent 1 of that damage. Enchanted creature gains +1/+2, and "{t}: Attach target Io you control to another target creature you control."
If a source would deal damage to Io, prevent 1 of
that damage.
{2}{w}{t}: Attach Io you control to another target creature you control. Activate this ability only if
Io is a creature.