Tristan, Unmoving Shield

Vigilance, Lifelink
Parter with Radeghast, Unstoppable Blade
(When this creature enters the battlefield, target player
may put Radeghast into their hand from their library,
then shuffle..)
{3}{w} : Prevent all damage dealt too and dealt by Tristan, Unmoving Shield this turn. Put a +1/+1 counter on each creature that had
damage prevented this way.
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Her shield only strengthens his blade.