The Company's discretion 3.1 The Auctioneer has the right at his or her sole discretion to refuse any bid, to divide any Lot, to combine two or more Lots, to withdraw any Lot from Sale and, if there is a dispute or the Auctioneer or the Company is of the opinion that there has been a misunderstanding or mistake regarding a Sale or a Lot the subject of a Sale, to rescind the Sale and put any Lot up for a Second Auction
In that case may leave any number of the targets unchanged, even if those targets would be illegal
Once per turn, when your opponent activates a Spell Card or effect (Quick Effect): You can detach 2 Xyz Materials from your monsters, and if you do, negate that effect, and if you do that, destroy that card
Tellah's ability resolves before the spell that caused it to trigger
Even if Blightsteel Colossus is countered or would be put into the graveyard through other means, it still gets shuffled back into your deck, making it an unstoppable force that can always come back again
because its a land that buffs creature-type strategies, its in demand , so you should consider its playability in your decks and keep an eye on supply from drafts and pre-release events