Many lands commanders want to play lands from their graveyard at a certain point, not considering the ones that already let you do it
Odds are you likely arent sitting on anything worth close to that much, but there are dozens of vintage and modern cards worth hundreds of dollars, even in poor condition
The format discussion is for another article, here I go all over the mechanic
Kellan, the Fae-Blooded Kellan, the Fae-Blooded is very efficient as both a tutor for equipment or auras, and later a strong double strike creature that buffs your team
Being able to pick and choose what card to exile makes it so that youll (almost) never be exiling something you cant play at that time and would actually hate losing
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