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'Create X 2/2 white Cat creature tokens. Shuffle White Sun's Zenith into its owner's library.
'Put X -1/-1 counters on each creature. Shuffle Black Sun's Zenith into its owner's library.
'Create X 2/2 white Cat creature tokens. Shuffle White Sun's Zenith into its owner's library.
'Search your library for a green creature card with mana value X or less, put it onto the battlefield, then shuffle. Shuffle Green Sun's Zenith into its owner's library.
'Create X 2/2 white Cat creature tokens. Shuffle White Sun's Zenith into its owner's library.
'Create X 2/2 white Cat creature tokens. Shuffle White Sun's Zenith into its owner's library.
'Search your library for a green creature card with mana value X or less, put it onto the battlefield, then shuffle. Shuffle Green Sun's Zenith into its owner's library.
'Search your library for a green creature card with mana value X or less, put it onto the battlefield, then shuffle. Shuffle Green Sun's Zenith into its owner's library.
'Red Sun's Zenith deals X damage to any target. If a creature dealt damage this way would die this turn, exile it instead. Shuffle Red Sun's Zenith into its owner's...
'Search your library for a green creature card with mana value X or less, put it onto the battlefield, then shuffle. Shuffle Green Sun's Zenith into its owner's library.
'Search your library for a green creature card with mana value X or less, put it onto the battlefield, then shuffle. Shuffle Green Sun's Zenith into its owner's library.
'Gain control of target creature with mana value X or less. If X is 5 or more, create a token that's a copy of that creature.