Deepfathom Echo

Condition: Near Mint
Color: Multi-Color
Card Text: At the beginning of combat on your turn, this creature explores. Then you may have it become a copy of another creature you control until end of turn. (To have this creature explore, reveal the top card of your library. Put that card into your hand if it’s a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.)
Rarity: R
Cost: 2GU
Pow/Tgh: 4/4
Card Type: Creature - Merfolk Spirit
Artist: Matt Stewart
Name: Deepfathom Echo
Finish: Regular
Card Number: 0228 
Set Name: The Lost Caverns of Ixalan