Pyke, the Bloodharbor Ripper

First Strike, Lurk (Whenever one or more
creatures with Lurk you control attack, reveal the
top card of your library. If it has Lurk, get an
emblem with "Creatures with Lurk you control have
+1/0".)

When Pyke deals 10+ combat damage, transform it. This transformation is permanent.
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"Slaughter docks' got nothing on me."