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Matchup & Sideboard ViewerMatchup & Sideboard Viewer

Matchup & Sideboard Viewer

Matchup & Sideboard Viewer

Meta snapshot · August 2026. Dated starting configurations from the source guide, not live, not auto-updated, and not immutable plans.

vs Master Yi mirror

Your role · Information-sensitive reactive tempoMaster Yi, Tempered.
19shuffled units after boarding✓ Stable
1418 floor24

Bring in

1×spell / gear
2×unit

Take out

1×unit
1×spell / gear
1×spell / gear

Qualifications

The mirror is about forcing the other player to act first. removes the lone defender without entering a Might contest at all, and attacks their reaction density before the turn that needs it.

cannot be chosen by enemy spells or abilities, so their and 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 Make them spend protection on your Hold first, then attack with what they can no longer represent.

Preserve · · · 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.

Sideboard philosophy in §14 · role assignment in §5.

Memory aids

Structural problem → the card that answers it. Each sideboard slot exists for a specific structural reason, not a general one.

Alone means no other friendly unit thereMaster Yi, Wuju Bladesman
Poro draws only if it dies aloneLonely Poro
Chosen or readied, she gains +1Irelia, Fervent
Play it to base, not to the battlefieldFirst Mate
Saves the unit, recalls it, loses the HoldZhonya’s Hourglass
Targets lock before the trigger resolvesAlpha Strike
Can enter where you have no unitRengar, Trophy Hunter
Six XP gives Deflect and GankingMaster Yi, Tempered