While it's a little narrow in what it can deal with (it doesn't do jack to Field of the Dead, for instance) land hate that can be played preemptively is pretty cool tech
His static ability is also pretty great, and will at a minimum draw you an extra card when you trigger it, since youll use that ability again
Nothing less than a Wish spell or divine intervention can end the NPCs hostility toward you
While there are the usual longshots at the top-end of this list, there are some bona fide slam dunks here
Midrange strategies can play Lumra as a potent six mana threat that incidentally provides them with plenty more lands to help fuel their one-for-one trades and slowly accrued advantages, creating a situation where creature lands might be the only real win condition they need if Lumra gets answered
Black decks used it to leave you without a hand thanks to cards like Hymn to Torach while they had a full one thanks to Necropotence