Shadowfax

Trample
Whenever a +1/+1 counter is put on Shadowfax, you may gain 1 life. If you do, prevent all combat damage that would be
dealt to Shadowfax until end of turn.
"He is the Chief of the Mearas, lord of horses,
and not even Theoden, King of Rohan, has ever
looked on a better." Gandalf