cards like evolving wilds mtg All cards will be carefully packed for safe transit Evolving Wilds Spill proxy

The flavour text, however, talks about how deadly it is, which leads me to wonder if it was initially supposed to have an effect more similar to Deathtouch or even poison counters

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The colourless mana cost and artifact typing is just the cherry on top

Exile the tokens at end of combat.) Creature Artifact - Cyberman Karn, Legacy Reforged Karn's power and toughness are each equal to the greatest mana value among artifacts you control

This does lock you out of the Extra Deck for the turn, but most Monarch builds don't even play on to make sure their Floodgates are live