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Any Deoxys that has extreme speed is dumb. It doesnt do much, and its fast enough anyway. Its wasting one of its precious move slots. It also opens itself up to way more counters by running a normal move. instead of something with more SEs
Cress can wall a lot of pokes. without multiple stat ups it cannot hit back for much damage. It also cannot do too much statusing. Toxic yes, But you have to have an over specialized set to burn/sleep. Defence form deoxys can recover, knock off, set up spikes, and seismic toss. And toxic...
Here's what you do. lvl 50ish wob against a lvl 1 newly hatched (generic non-dark icebeam learner). The reflected damage wont be much. You should get like 5-6 reflected beams out of each baby.
Not sure if this was answered.
Usually on wifi, you dont get a chance to check the other pokemon for legitamacy. So... if you dont tell them its jibaku's they wont know. Also, its not an impossible hack so... ya. Nothing is superbad about it.