fling cards mtg card Fling Fling deals damage equal to the sacrificed creatures power to any target. Fling | Promotional | Card

Once the early game has been locked down, though, Ugin's Labyrinth can also be the last card needed to close the door

If you want to stop someone from getting a Clue token, you have to counter the spell or ability that causes them to investigate in the first place like countering an Expose Evil, or using a stifle effect like Disallow to stop a triggered ability that would make a player investigate

I had to say black removal spell in that last sentence because there is still Lightning Strike in the set

The player can do it by paying its mana cost

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The natural play pattern is to load Obuun up with its own counters so the creatures it makes hit even harder, but this could also lead a counters-based deck that uses it to spread a bunch of free counters around