Mountainflesh Mosquito

Whenever this attacks, flip a coin. If it lands on
heads, this gains trample until end of turn. If it
lands on tails, this gains flying until end of turn.
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The giant mosquito rose from the pool of molten lava.
As the lava dripped and curled off of it's body it
screeched. It lashed it's mouth out at the nearest
soldier, penetrating their ribs, and sucked them dry.