Gargantuan Snail

At the beginning of your upkeep, if you did not
attack with a snail last turn, put a +1/+1 counter
on each snail you control. Snail creatures with
toughness 3 or greater have reach.
{t}, Remove three +1/+1 counters from target
snail you control: Put a 0/1 snail creature token
into play.
"Shell by shell we build our wall. Day by day
we watch it grow."