All I can do is go forward
Since the entire point of playing a mana ramp card is to be able to play more expensive spells as quickly as possible, any variable that can slow down your ability to take advantage of these pivotal spells on curve can cause a surprising amount of harm in a worst case scenario
Then if you tap it, you can look at the top 6 and cast a Vehicle or artifact dork from among them
Most notable, the D23 promos were the first cards we ever saw, and have already become a major collector's item as a result
This might go a way to fixing one of the main problems I have with Lorcana at the moment: aside from a few rares in each set, most cards in most packs arent worth even the cost of the pack itself
As you activate a library ninjutsu ability, you reveal the Ninja card in your library and shuffle the attacking creature into your library