Shipbreaker Kraken

“6UU: Monstrosity 4. <em>(If this creature isn't monstrous, put four +1/+1 counters on it and it becomes monstrous.)</em> <br> When Shipbreaker Kraken becomes monstrous, tap up to four target creatures. Those creatures don't untap during their controllers' untap steps for as long as you control Shipbreaker Kraken.”