When Mwonvuli Beast Tracker enters the battlefield, search your library for a creature card with deathtouch (Any amount of damage this deals to a creature is enough to destroy it.), hexproof (This permanent can't be the target of spells or abilities your opponents control.), reach (This creature can block creatures with flying.), or trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.) and reveal it. Shuffle your library and put that card on top of it.
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