As another Yellow player, Kalgara is exactly the type of leader I’ve been excited for. In Digimon, the yellow archetypes I enjoy most are ones that burn security in exchange for powerful effects. I have the most fun with huge risk-reward style decks.
I'd say you're right about the leader effect in the beginning, requirements are bold and at the start of the effect usually. Plus, enels effect is worded very similarly, where it says something like "then, Trash 1 card from your hand" at the end and you can still use it with 0 hand cards
