Sprout Swarm
The List (PLST #FUT-138)
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CKCard Kingdom
Normal
$3.49
CMCardmarket
Normal
€0.70
MPMana Pool
Normal
$4.84
TCTCGplayer
Normal
$7.30
Sprout Swarm
CMC: 2
Type
Instant
Rules Text
Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)
Buyback 
(You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.)
Create a 1/1 green Saproling creature token.
Printing
The List (PLST #FUT-138)
common
Illustrated by Chippy