"I used to hurl rocks and eat scraps of meat burned over a fire. Look at what I've become and tell me Simic does not hold infinite possibility."

Vorel of the Hull Clade

{G}{U}, {T}: Double the number of each kind of counter on target artifact, creature, or land.

The Lost Caverns of Ixalan Commander

New Capenna Commander

RNA Guild Kit

Commander Anthology Volume II

Commander 2016

The effect of Vorel's ability will essentially double the counters on the target artifact, creature, or land. For example, if a creature has three +1/+1 counters and a divinity counter on it before the ability resolves, it will have six +1/+1 counters and two divinity counters on it after the ability resolves.