Master of the Pearl Trident 
Creature — Merfolk
$0.65 #3505 0.41 14.3 years
Other Merfolk creatures you control get +1/+1 and have islandwalk. (They can't be blocked as long as defending player controls an Island.)
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Lord of Atlantis98%
$4.22↑#4994↓0.20↓33.2 years↑
"Other Merfolk get +1/+1 and have islandwalk."
Merfolk Mistbinder88%
$0.19↓#6425↓0.00↓8.8 years↓
"Other Merfolk you control get +1/+1."
Streambed Aquitects86%
$0.16↓#18039↓0.00↓19.0 years↑
"
: Target Merfolk creature gets +1/+1 and gains islandwalk until end of turn."
: Target Merfolk creature gets +1/+1 and gains islandwalk until end of turn."
Merfolk Sovereign85%
$0.35↓#41700.29↓17.3 years↑
"Other Merfolk creatures you control get +1/+1."
Deepchannel Duelist82%
$0.23↓#16989↓0.14↓0.7 years↓
"Other Merfolk you control get +1/+1."
Attuma, Atlantean Warlord80%
$0.32↓#11398↓0.370.3 years↓
"Other Merfolk you control get +1/+1."
Coralhelm Commander80%
$0.25↓#11241↓0.04↓16.5 years↑
"Other Merfolk creatures you control get +1/+1."
Mist Dancer76%
$0.29↓#5447↓0.12↓2.9 years↓
"Other Merfolk you control get +1/+0 and have flying."
Merrow Reejerey76%
$0.31↓#40200.22↓19.0 years↑
"Other Merfolk creatures you control get +1/+1."
Vodalian Hexcatcher74%
$5.28↑#4684↓0.334.1 years↓
"Other Merfolk you control get +1/+1."
Deepway Navigator72%
$0.18↓#18076↓0.17↓0.7 years↓
"As long as you attacked with three or more Merfolk this turn, Merfolk you control get +1/+0."