Flying
Other multicolored creatures you control get +1/+0.
Whenever another multicolored creature you control dies, return it to its owner's hand at the beginning of the next end step.

Menace (This creature can't be blocked except by two or more creatures.)

Whenever Risen Reef or another Elemental enters the battlefield under your control, look at the top card of your library. If it's a land card, you may put it onto the battlefield tapped. If you don't put the card onto the battlefield, put it into your hand.

At the beginning of your upkeep, discard a card.

Rubblebelt Recluse attacks each combat if able.

Rugged Highlands enters the battlefield tapped.
When Rugged Highlands enters the battlefield, you gain 1 life.
: Add or .

Each player can't cast more than one spell each turn.

Whenever another blue creature enters the battlefield under your control, target player mills two cards.

Sacrifice Salvager of Ruin: Choose target permanent card in your graveyard that was put there from the battlefield this turn. Return it to your hand.

: Return Sanitarium Skeleton from your graveyard to your hand.

Flying
At the beginning of your end step, if an opponent lost life this turn, put a +1/+1 counter on Savage Gorger. (Damage causes loss of life.)

When Savannah Sage enters the battlefield, you gain 2 life.

When Scampering Scorcher enters the battlefield, create two 1/1 red Elemental creature tokens. Elementals you control gain haste until end of turn. (They can attack and this turn.)

Choose two target players. Each of them searches their library for a card, then shuffles their library and puts that card on top of it.

When Scholar of the Ages enters the battlefield, return up to two target instant and/or sorcery cards from your graveyard to your hand.

Whenever Scorch Spitter attacks, it deals 1 damage to the player or planeswalker it's attacking.

Scoured Barrens enters the battlefield tapped.
When Scoured Barrens enters the battlefield, you gain 1 life.
: Add or .

: Add one mana of any color.
: Target creature becomes the color or colors of your choice until end of turn.

Whenever a creature enters the battlefield under your control, scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)
Whenever you cast a spell that targets a creature you control, draw a card.

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)