In 23 moves, match 16 snails. It’s been a while since one of these Evil Magnets have showed up. Thankfully, there are four Snail Emitters spread around the grid so we don’t have to worry about losing a snail here and there. Keep in mind that you can move Iron Moving Blockers around no matter how many layers of armor they have on them. Forget about the obstacles and clear them only accidentally.
The snails spawning from the sides will be teleported to the bottom of your grid. Try to make room in those columns on the sides so more snails can join you. The objective cannot be completed without them. And as game suggested, use the Lucky Shuffler booster to rearrange objects in the grid.