Blob, the Hungry One

At the beginning of your upkeep, sacrifice a creature, then put X +1/+1 counters on Blob, where X is half of the sacrificed creature's toughness, rounded up.
{t}:Blob, the Hungry One deals damage equal to its power to target creature. Then put X +1/+1 counters on Blob, where X is half of the sacrificed creatures toughness, rounded up
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"Munch"