ジェスの盗人

果敢（あなたがクリーチャーでない呪文を唱えるたび、ターン終了時まで、このクリーチャーは＋１/＋１の修整を受ける。）
ジェスの盗人がプレイヤー１人に戦闘ダメージを与えるたび、カードを１枚引く。

「如果一点危险都没有，逃跑还有什么乐趣可言？」

介斯盗贼

灵技（每当你施放非生物咒语时，此生物得+1/+1直到回合结束。）
每当介斯盗贼对任一牌手造成战斗伤害时，抓一张牌。

Jhessian Thief

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Whenever Jhessian Thief deals combat damage to a player, draw a card.

Iconic Masters

Magic Origins

Any spell you cast that doesn’t have the type creature will cause prowess to trigger. If a spell has multiple types, and one of those types is creature (such as an artifact creature), casting it won’t cause prowess to trigger. Playing a land also won’t cause prowess to trigger.

Once it triggers, prowess isn’t connected to the spell that caused it to trigger. If that spell is countered, prowess will still resolve.

Prowess goes on the stack on top of the spell that caused it to trigger. It will resolve before that spell.