Brudiclad, Telchor Engineer

Once a creature token that came under your control this turn has legally attacked, causing it to lose haste by removing Brudiclad from the battlefield won't cause that token to stop attacking.

The effect of Brudiclad's triggered ability lasts indefinitely. It continues to apply after Brudiclad leaves the game.

Brudiclad copies only the values defined as the original token was created (unless that token is copying something else; see below). It doesn't copy whether that token is tapped or untapped, whether it has any counters on it or any Auras and Equipment attached to it, or any non-copy effects that have changed its power, toughness, types, color, or so on.