Man-o'-War

When Man-o'-War enters, return target creature to its owner's hand.

Electrozoa

Flash
Flying
When Electrozoa enters, you get {E}{E} (two energy counters).
At the beginning of your first main phase, tap Electrozoa unless you pay {E}.

Esperzoa

Flying
At the beginning of your upkeep, return an artifact you control to its owner's hand.

Glimmerbell

Clinging Anemones

Defender
Evolve (Whenever a creature enters under your control, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)

Dormant Gomazoa

Flying
Dormant Gomazoa enters tapped.
Dormant Gomazoa doesn't untap during your untap step.
Whenever you become the target of a spell, you may untap Dormant Gomazoa.

Avizoa

Flying
{0}: Avizoa gets +2/+2 until end of turn. You skip your next untap step. Activate only once each turn.

The Reality Chip

You may look at the top card of your library any time.
As long as The Reality Chip is attached to a creature, you may play lands and cast spells from the top of your library.
Reconfigure {2}{U} ({2}{U}: Attach to target creature you control; or unattach from a creature. Reconfigure only as a sorcery. While attached, this isn't a creature.)

Hydroid Krasis

When you cast this spell, you gain half X life and draw half X cards. Round down each time.
Flying, trample
Hydroid Krasis enters with X +1/+1 counters on it.

Glowing Anemone

When Glowing Anemone enters, you may return target land to its owner's hand.

Watchful Blisterzoa

Flying
Watchful Blisterzoa enters with an oil counter on it.
When Watchful Blisterzoa dies, draw cards equal to the number of oil counters on it.

Guard Gomazoa

Defender, flying
Prevent all combat damage that would be dealt to Guard Gomazoa.

Gomazoa

Defender, flying
{T}: Put Gomazoa and each creature it's blocking on top of their owners' libraries, then those players shuffle.