Theres no Enhanced Booster Box this time around, so your best bet is sticking to traditional Booster Boxes if you want to try to get the full spread
Pearl-Ear was a welcome addition, but was quite narrow
In order to meld two cards you need to both own and control a meld pair
Behold the Multiverse Instant speed, able to be played later with the Foretell ability, and letting you Scry 2 before drawing to set up your draw, Behold the Multiverse is an extremely versatile way to draw 2 cards for what you want to pay, when you want to pay it, and even get up 4 deep if you need to
Similarly, if the move is strong against one of the opponent's types but weak against the other (such as Razor Leaf, a Grass-type move, used against a Gyarados, a Water/Flying Pokmon), the move deals normal damage