
Sisay gets +1/+1 for each color among other legendary permanents you control.
: Search your library for a legendary permanent card with mana value less than Sisay's power, put that card onto the battlefield, then shuffle.
Sisay is a WUBRG toolbox commander: assemble multiple legendary permanents to pump her power, then use her five-mana activated ability to repeatedly tutor legendary permanents directly onto the battlefield. You snowball into a chain of legendary creatures, planeswalkers, and artifacts that either lock the table out or assemble a combo.
Tighten the mana base with all relevant fetches, duals, and Triomes plus fast mana like Mana Crypt, Jeweled Lotus, and Mox Diamond to accelerate Sisay and her WUBRG activations. Add a compact, tutorable two-card combo (such as Mikaeus, the Unhallowed plus a free sac outlet, or a Thassa's Oracle/Demonic Consultation package) so every tutor builds toward a kill. Round out with protection like Heroic Intervention and Lightning Greaves and efficient stax bullets to defend the engine while you set up.
The most-played cards for this commander, built from aggregated deck data (the Mythic Graph). Build public decks to seed it.
→ Put a selection of creature cards from your library onto the battlefield
→ Put a selection of creature cards from your library onto the battlefield
→ Put a selection of creature cards from your library onto the battlefield
→ Infinite colored mana, Infinite combat phases, Infinite ETB
→ Put a selection of creature cards from your library onto the battlefield
Combos via Commander Spellbook.
Same color identity (BGRUW), by popularity.