Lord Xander, the Collector (Showcase Golden Age Gilded Foil) [Streets of New Capenna] Streets of New Capenna Commander Promos then put a +1/+1 counter

then put a +1/+1 counter on Grimgrin

When CARDNAME enters the battlefield

each player exiles cards from the top of their library until they exile a nonland card

Fortunately

Lord Xander, the Collector (Showcase Golden Age Gilded Foil) [Streets of New Capenna] Streets of New Capenna Commander Promos then put a +1/+1 counterSet: Streets of New Capenna Type: Legendary Creature Vampire Demon Noble Rarity: Mythic Cost: {4}{U}{B}{R} When Lord Xander, the Collector enters the battlefield, target opponent discards half the cards in their hand, rounded down. Whenever Lord Xander attacks, defending player mills half their library, rounded down. When Lord Xander dies, target opponent sacrifices half the nonland permanents they control, rounded down.