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'When this creature enters, target player mills a card.
'Flying
This creature gets +1/+1 for each other creature you control with flying.
{2}{W}{U}: Create a 1/1 white Cat Bird creature token with flying.
'Vigilance
Whenever this creature enters or attacks, create a Map token. (It's an artifact with "{1}, {T}, Sacrifice this token: Target creature you control explores. Activate only as a sorcery.")
At the beginning of your end step, untap target Merfolk you control.
Other Merfolk you control get +1/+1.
'Flash When this artifact enters, it deals 2 damage to any target. Craft with artifact {2}{R} ({2}{R}, Exile this artifact, Exile another artifact you control or an artifact card from...
'Other Merfolk get +1/+1 and have islandwalk. (They can't be blocked as long as defending player controls an Island.)
'Other Merfolk get +1/+1 and have islandwalk. (They can't be blocked as long as defending player controls an Island.)
'Islandwalk (This creature can't be blocked as long as defending player controls an Island.) When this creature enters, look at the top four cards of your library, then put them...
'Flying Whenever Skysovereign enters or attacks, it deals 3 damage to target creature or planeswalker an opponent controls. Crew 3 (Tap any number of creatures you control with total power...
'Islandwalk (This creature can't be blocked as long as defending player controls an Island.)
Merfolk spells and Wizard spells you cast cost {1} less to cast.
'{U}{U}, {T}: Target creature phases out. (While it's phased out, it's treated as though it doesn't exist. It phases in before its controller untaps during their next untap step.)
'Domain — When this creature enters, look at the top X cards of your library, where X is the number of basic land types among lands you control. You may...