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Creature - Elemental
As Molten Sentry enters the battlefield, flip a coin. If the coin comes up heads, Molten Sentry enters the battlefield as a 5/2 creature with haste. If it comes up tails, Molten Sentry enters the battlefield as a 2/5 creature with defender.
Some take after their father, Stone, some after their mother, Fire.
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Ravnica: City of Guilds