Hes one of the great TCG creatives, having worked on Pokmon and Netrunner in addition to Magic
They can respond to this by tapping all of their lands, but it means that they only get one phase to cast things in
Note that Conspiracy also grants the Creature type to cards in your graveyard, hand, and library in much the same way as Leyline of Transformation
For example, to have an 85 percent chance of hitting five lands by turn five when youre on the play, youd have to play 33 lands in your 60-card deck, and while some decks might want to go to such extremes ( Dryad of the Ilysian Grove decks in Modern, for example), its usually not the case
Emblems cant be removed by normal means, so even if Sephiroth is defeated, the emblem sticks around, pinging your opponents for the rest of the game
All you have to do is avoid those angry stares at the other end of the table