I don't know when I will play with this card, but I do have a couple ideas: this is another way to play Phage the Untouchable from your command zone (though you do go to 1 life yikes), or you can set up a win with Near-Death Experience and an instant-speed way to kill yourself like Glorious End to surprise win on your upkeep
40 lands might be a few too many, given the mana sources elsewhere in the deck, but this can always be addressed with a few upgrades
Incapsula incident ID: 1813000671182813178-847187504755183865
(This is part of the reason why incidental lifegain like The Celestus and Lightning Helix is important to the deck.) If we are at a lower life total than our opponent is, we can use Gideon's Sacrifice to complete the combo kill
Also of note is the penalty for losing: If your Mega faints, your opponent will get 3 point, instantly winning the match
The PSA 9 Mint is the most documented copy of this card, even being the image on Bulbapedia