mtg deal damage draw card What Magic cards and cards or add mana? Even if someone opt'd to

"My hands were literally shaking

Concealed Courtyard, Spirebluff Canal, Blooming Marsh, Inspiring Vantage and Botanical Sanctum reprint MTGs offering of enemy fast lands - land cards that can be tapped for either of two mana colours, but enter the battlefield tapped unless you control two or fewer other lands

Modern Horizons 3 Commander Decklists Four new Commander decks (and Collector's Edition Commander decks) will hit stores when Modern Horizons 3 releases June 14, 2024

The easiest way to do this is just take however many slots you would normally fill with two-cost mana rocks, and replace them with two-cost Merfolk Looter (and other creatures with similar draw-discard activated abilities)

1 Cemetery Prowler

If so, it might be a good idea to cast a boardwipe