: Add . , : Add one mana of any color in your commander’s color identity. If you spend this mana to cast your commander, it enters with a number of additional +1/+1 counters on it equal to the number of times it’s been cast from the command zone this game.
If your commander is a card that has no colors in its color identity, Opal Palace's last ability produces no mana. It doesn't produce {C}.
10-11-2020
wotc
If you have two commanders, the last ability adds one mana of any color in their combined color identities.
10-11-2020
wotc
The "number of times it's been cast from the command zone" includes the most recent time. For example, the first time you cast your commander from the command zone in a game, if you spent mana from Opal Palace's last ability to do so, it will enter the battlefield with a +1/+1 counter.
10-11-2020
wotc
If Opal Palace's last ability produces two mana (most likely due to Mana Reflection) and you spend them to cast a commander, that commander enters with two counters for each time it's been cast from the command zone this game.
10-11-2020
wotc
If you don't have a commander, Opal Palace's last ability produces no mana.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.
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Andreas Rocha2013-11-01
