Some powers turn out the lights, so you can\u2019t see your board anymore, other than through the light that\u2019s coming out from under the piece you\u2019re currently playing with. Some poke holes in your existing playing field, which makes clearing those lines either exceptionally difficult or, without some power usage of your own, impossible. Some can steal crystals for themselves, or transport random pieces of blocks over. Some rearrange everything to make a board very top heavy \u2014 the bottom half will be mostly clear, but you have to survive long enough to get back to it for that to matter. Experiment with the various characters, as you\u2019ll eventually find one that fits your strategy, or you\u2019ll discover it\u2019s worth adapting your strategy to fit one of the characters.