If there's a cost associated with having that creature attack, you aren't forced to pay that cost, so it doesn't have to attack in that case either
In the past, a lot of people thought the Thick, Thin and Grey stamps were just the printer pressing down more or less, or they might almost have run out of ink
And if you put that Disallow there, it means they can use a future Gearhulk to cast it without any trouble at all
Drown in the Loch is a removal/counterspell hybrid that only gets more powerful as your opponents' graveyards fill
Put this in your WUBRG decks with plenty of ways to untap permanents and go nuts
It has seemed good, particularly since it can block a Fleecemane Lion, and this is a matchup that can go long enough to give Tasigur a chance to do his thing, especially when combined with Courser of Kruphix