There are no brakes here like just once per turn or skipping the first card drawn in their draw step, just one card for them is one card for you as long as you have that mana
According to TCGPlayer, there's a 1 in 80 chance to get a coveted SIR, and when compared to Destined Rivals' 1 in 94 (alongside other adjustments), it simply feels more exciting to buy
Cards like Terror, Fireball, and Mana Leak were offered in the first wave, and these were all classic cards with text that tournament players know by heart, with recognizable art, too
But theres a few advantages here: You get to see all their hands and get the best card, but also, if they dont have good cards, all the better for you
Zacians attacks are all worthwhile, if simple
They use a spell or attack, and in that case you defend and draw more cards