Crab Umbra + Five Hundred Year Diary Combos

2 known combos featuring both cards in Commander

Infinite blue mana

Combo 1 with Myr Welder

Also requires:

Results: Infinite blue mana

Steps

Activate Myr Welder using Five Hundred Year Diary's ability by tapping it, adding at least {U}{U}{U}{U}
Activate Crab Umbra by paying {2}{U}, untapping Myr Welder.
Repeat.

Colorless View on Commander Spellbook →

Also requires:

Results: Infinite blue mana

Show steps

Activate Trazyn using Five Hundred Year Diary's ability by tapping it, adding at least {U}{U}{U}{U}.
Activate Crab Umbra by paying {2}{U}, untapping Trazyn.
Repeat.

Colorless View on Commander Spellbook →

📚 Learn more:

Combo Burn Cantrip Removal Mana

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