mtg m21 cards The Watchtower 07/06/20 – Underpriced Exile each permanent with mana value X or less thats one or more colors Heroic Intervention [Core Set 2021

But the big shock is how you use them: unlike the Ixalan flip-lands, these cards are modal

If you play against friends and you know each others decks, this card allows for some serious metagaming too

Straight away you get an extra land drop, and solving the case requires you to have only 7 lands in play

Reprints on MTG Arena MTG Arena had a problem when Core Set 2021 came out

How does one even prepare for something like that

This number is almost certainly an overestimate, as some cards were just straight removed and new ones werent added back in, but its a good reference point to know that were not getting any appreciable supply of Legends cards added to the mix