Mox LotusHow it works & interactions with other cards

What It Does

Mox Lotus is a legendary artifact that costs 15 mana to cast. Once on the battlefield, it has two activated abilities: a tap ability that adds infinite colorless mana to your mana pool, and a secondary ability that lets you spend 100 mana to add one mana of any color. Essentially, once you resolve this card, you no longer need to worry about the numeric costs of colorless spells or abilities.

Step-by-Step Resolution

When you activate the first ability of Mox Lotus, you tap the artifact as a mana ability. This ability does not use the stack and cannot be responded to. You immediately add {∞} to your mana pool. This mana exists as a quantity that is higher than any finite number. You can then use this infinite colorless mana to pay for the 100-mana cost of its second ability repeatedly, effectively giving you infinite mana of any color as well.

Common Mistakes

The most common mistake is forgetting that Mox Lotus itself costs 15 mana to cast, which usually requires other ramp tools to get onto the table. Additionally, players often forget that mana still empties from the mana pool at the end of steps and phases. Even though the mana is infinite, it does not stay in your pool forever unless another effect specifically allows it to remain.

When to Play It

This card is the ultimate 'win more' or finisher in decks that can generate high amounts of mana quickly. It is best played in casual or 'Un-set' environments where you intend to cast massive spells or activate expensive abilities dozens of times in a single turn. It is particularly effective in decks that can cheat artifacts into play to bypass its high casting cost.

Interaction examples

Scaling Up Your Mana

Sol Ring

You can use Sol Ring to help pay for the massive 15-mana cost of Mox Lotus. While Sol Ring provides a modest two colorless mana, it accelerates your path toward the turn where you can finally tap Mox Lotus to replace all your mana needs with an infinite supply.

Filtering for Color

Arcane Signet

If you need colored mana for your Commander's spells, you can use Mox Lotus's second ability. By tapping Mox Lotus for infinite colorless mana, you can spend '100' of that mana an infinite number of times to generate any color. While Arcane Signet provides one mana of your identity for free, Mox Lotus ensures you have an inexhaustible supply of that mana.