Card Templating and Phrasing

Hi, Mark! A templating question (with some recent card text for reference):

Whenever you commit a crime, each opponent loses 1 life and you gain 1 life. This ability triggers only once each turn.

Whenever one or more +1/+1 counters are put on Dusk Legion Duelist, draw a card. This ability triggers only once each turn.To save space and avoid any sense of letdown, why does Magic not more frequently use phrasing such as the following?

The first time you commit a crime each turn, each opponent loses 1 life and you gain 1 life.

The first time one or more +1/+1 counters are put on Dusk Legion Duelist each turn, draw a card.Unrelated feedback: I quite like these designs, which slot perfectly into a certain Burn deck of mine: Amped Raptor; Phlage, Titan of Fire's Fury; Fear of Missing Out (such good art); Bloodbraid Marauder; also Inventor's Axe.

Two main reasons. One, it becomes a memory issue where you have to think back to what you did before you cast this spell. Two, it increases the chances that you miss a chance to use the card the turn you play it.

Amped Raptor Art Blood Bloodbraid Marauder Card Draw Dusk Legion Duelist Fear Inventor's Axe Once Per Turn Phlage, Titan of Fire's Fury Templating Triggered Abilities