Jirachi LA? Storing it on bench can get it OHKO'd by Garchomp C X, but that isn't the problem. It's more the fact that it tends to get OHKO'd pretty easily (remember, after Doom Desire, it's your opponent's turn - no time for Warp Point). Even if it doesn't, you won't have energy on really anything unless you want to take another turn or two to power it up, at which point your active will have been KO'd, and Jirachi will almost definitely have gotten the 2HKO after Doom Desire that time. And after all this, your opponent's put energy on his Pokémon, while you've been putting it on the 2 now-KO'd-cards.