At the beginning of each player's upkeep, that player may put an artifact, creature, or land card from their hand onto the battlefield.
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Nykthos, Shrine to Nyx
Legendary Land
{T}: Add {C}.
{2}, {T}: Choose a color. Add an amount of mana of that color equal to your devotion to that color. (Your devotion to a color is the number of mana symbols of that color in the mana costs of permanents you control.)
{1}
Sol Ring
Artifact
{T}: Add {C}{C}.
{3}{U}{U}
Ugin's Insight
Sorcery
Scry X, where X is the highest mana value among permanents you control, then draw three cards.