Star (Yoshi's Island series)
From the Super Mario Wiki
Stars are a common collectible in the Yoshi's Island games, found in certain defeated enemies and some Winged Clouds or by dropping an enemy or egg inside a Tulip. Winged Clouds can hold five Stars, while Tulips spout out eight Stars. However, if Yoshi has reached the maximum amount of Stars, these Stars will be replaced with coins. There are also packs of Stars that come in 10 or 20. Two of them also appear if a Yoshi Egg hits an enemy while it is red. These stars are used when Baby Mario falls off a Yoshi's back. The Stars create a bubble around Baby Mario, protecting him from Toadies until it is depleted. Every Star collected adds one more second to the Countdown Timer, maxing at 30. Checkpoint Rings give Yoshi ten more seconds as he passes through them. Should the player recover Baby Mario with less than 10 stars remaining, the counter will gradually refill to 10. In Yoshi's Woolly World, Stars are replaced with Hearts.
Yoshi's Island: Super Mario Advance 3
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