Tanner, Binding Blade

Whenever Tanner, Binding Blade deals combat damage, Fateseal 4 (To fateseal 4, look at the top four cards of an opponent's library, then put any number of them on the bottom of that player's library and the rest on top in any order.)
{u}: Tap target creature
{3}{u}{u}: Fateseal 3
The greatest swordsman who ever lived has never cut flesh