Sleepy Meerkats

Whenever a land you control becomes tapped, return Sleepy Meerkats from the battlefield to your hand. You gain 1 life.
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''Ha! Movement in the bushes! S-snake?! —No.
Don't worry; no snake out there. —Wait... Ha!
Once again! And... wait... was it boomerang?
—No. Don't worry; it's just a meerkat.''