Flying, first strike

: Add .
: Thunder Totem becomes a 2/2 white Spirit artifact creature with flying and first strike until end of turn.

Defender (This creature can't attack.)
Flying
: Thunder Wall gets +1/+1 until end of turn.

Flash (You may cast this spell any time you could cast an instant.)
Flying
Other creatures you control with flying get +1/+1.

Flying
: Tap all creatures with toughness 2 or less.
: All other creatures lose flying until end of turn.

Replicate (When you cast this spell, copy it for each time you paid its replicate cost.)
Create a 3/3 blue Weird creature token with defender and flying. Exile it at the beginning of the next end step.

First strike, trample, haste
Crew 1 (Tap any number of creatures you control with total power 1 or more: This Vehicle becomes an artifact creature until end of turn.)

As long as Thunderstaff is untapped, if a creature would deal combat damage to you, prevent 1 of that damage.
, : Attacking creatures get +1/+0 until end of turn.

You may return three Islands you control to their owner's hand rather than pay this spell's mana cost.
Counter target spell.

Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
Sacrifice Ticking Gnomes: It deals 1 damage to any target.

Any player may cast spells as though they had flash.
Your opponents can't cast spells during your turn.

You may return an Island you control to its owner's hand rather than pay this spell's mana cost.
You may tap or untap target creature.

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
Pay 2 life or : Counter target red or green spell. Any player may activate this ability.

When Tidal Courier enters the battlefield, reveal the top four cards of your library. Put all Merfolk cards revealed this way into your hand and the rest on the bottom of your library in any order.
: Tidal Courier gains flying until end of turn.

: For each attacking creature without flying, its controller may pay . If that player doesn't, creatures you control blocking that creature gain first strike until end of turn.

At the beginning of each upkeep, you may tap or untap target permanent.

Cast this spell only if no permanents named Tidal Influence are on the battlefield.
Tidal Influence enters the battlefield with a tide counter on it.
At the beginning of your upkeep, put a tide counter on Tidal Influence.
As long as there is exactly one tide counter on Tidal Influence, all blue creatures get -2/-0.
As long as there are exactly three tide counters on Tidal Influence, all blue creatures get +2/+0.
Whenever there are four or more tide counters on Tidal Influence, remove all tide counters from it.

Tidal Kraken can't be blocked.

Tap up to three target creatures without flying.

: Target creature becomes the color of your choice until end of turn.