明敏な雛

明敏な雛は、－１/－１カウンターが４個置かれた状態で戦場に出る。
{U/R}：クリーチャー１体を対象とする。このターン、それでは明敏な雛をブロックできない。
あなたが青の呪文を１つ唱えるたび、明敏な雛の上から－１/－１カウンターを１個取り除く。
あなたが赤の呪文を１つ唱えるたび、明敏な雛の上から－１/－１カウンターを１個取り除く。

机伶幼雏

机伶幼雏进战场时上面有四个-1/-1指示物。
{U/R}：目标生物本回合中不能阻挡机伶幼雏。
每当你施放蓝色咒语时，从机伶幼雏上移去一个-1/-1指示物。
每当你施放红色咒语时，从机伶幼雏上移去一个-1/-1指示物。

Shrewd Hatchling

Shrewd Hatchling enters with four -1/-1 counters on it.
{U/R}: Target creature can't block Shrewd Hatchling this turn.
Whenever you cast a blue spell, remove a -1/-1 counter from Shrewd Hatchling.
Whenever you cast a red spell, remove a -1/-1 counter from Shrewd Hatchling.

The List

Modern Masters 2015

Shrewd Hatchling enters the battlefield with four -1/-1 counters on it.
{UR}: Target creature can't block Shrewd Hatchling this turn.
Whenever you cast a blue spell, remove a -1/-1 counter from Shrewd Hatchling.
Whenever you cast a red spell, remove a -1/-1 counter from Shrewd Hatchling.

Duel Decks: Izzet vs. Golgari

Eventide

Shrewd Hatchling comes into play with four -1/-1 counters on it.
{UR}: Target creature can't block Shrewd Hatchling this turn.
Whenever you play a blue spell, remove a -1/-1 counter from Shrewd Hatchling.
Whenever you play a red spell, remove a -1/-1 counter from Shrewd Hatchling.

If there are no -1/-1 counters on it when the triggered ability resolves, the ability does nothing. There is no penalty for not being able to remove a counter.

If you cast a spell that’s both of the listed colors, both abilities will trigger. You’ll remove a total of two -1/-1 counters from the Hatchling.