vs Master Yi mirror
19 shuffled units after boarding · at or above the 18-unit floor.
Bring in
Take out
Qualifications
The mirror is about forcing the other player to act first. Charm removes the lone defender without entering a Might contest at all, and Sabotage attacks their reaction density before the turn that needs it.
Ruin Runner cannot be chosen by enemy spells or abilities, so their Charm and Rampage stop working on it. It can still lose in combat and to untargeted effects.
Do not attack a protected Hold just because the Might is theoretically there. Make them spend protection on your Hold first, then attack with what they can no longer represent.
PreserveCharm · Sabotage · Defy · each is worth more as a threat than as a card spent early
Avoid · Committing the first large trick and telling them exactly what your hand no longer holds.
Full matchup treatment, postures and rules context in the guide’s matchup viewer.
Memory aids
Structural problem → the card that answers it. Each sideboard slot exists for a specific structural reason, not a general one.