First strike

: Target creature gains first strike until end of turn.

When Cenote Scout enters, it explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.)

Whenever Copperhorn Scout attacks, untap each other creature you control.

: Enslaved Scout gains mountainwalk until end of turn. (It can't be blocked as long as defending player controls a Mountain.)

When another creature enters, sacrifice Flame-Kin War Scout. If you do, Flame-Kin War Scout deals 4 damage to that creature.

Create three 1/1 red Goblin Scout creature tokens with mountainwalk. (They can't be blocked as long as defending player controls a Mountain.)

When Honorable Scout enters, you gain 2 life for each black and/or red creature target opponent controls.

, : Target creature gains first strike until end of turn.

Domain — Kavu Scout gets +1/+0 for each basic land type among lands you control.

Rally — Whenever Lantern Scout or another Ally you control enters, creatures you control gain lifelink until end of turn.

Dash (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.)

Flying

: Rappelling Scouts gains protection from the color of your choice until end of turn.

: You may put a land card from your hand onto the battlefield.

When Sand Scout enters, if an opponent controls more lands than you, search your library for a Desert card, put it onto the battlefield tapped, then shuffle.

Whenever one or more land cards are put into your graveyard from anywhere, create a 1/1 red, green, and white Sand Warrior creature token. This ability triggers only once each turn.

Kicker (You may pay an additional as you cast this spell.)

Search your library for a basic land card, put it onto the battlefield tapped, then shuffle. If this spell was kicked, create two 1/1 white Soldier creature tokens.

Search your library for any number of basic land cards, reveal those cards, then shuffle and put them on top.

Reach (This creature can block creatures with flying.)

Threshold — Seton's Scout gets +2/+2 as long as seven or more cards are in your graveyard.

Flying

, Sacrifice Silkwing Scout: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

First strike, vigilance

Concealed Position — When Space Marine Scout enters, if an opponent controls more lands than you, you may search your library for a Plains card, put it onto the battlefield tapped, then shuffle.

Flying

: Add one mana of any color.

Whenever you expend 8, return up to one target permanent card from your graveyard to your hand. (You expend 8 as you spend your eighth total mana to cast spells during a turn.)

, Exile Trustworthy Scout from your graveyard: Search your library for a card named Trustworthy Scout, reveal it, put it into your hand, then shuffle.

Haste (This creature can attack and as soon as it comes under your control.)

At the beginning of the end step, return Viashino Sandscout to its owner's hand. (Return it only if it's on the battlefield.)

Flying

When Waterwind Scout enters, create a Map token. (It's an artifact with ", , Sacrifice this artifact: Target creature you control explores. Activate only as a sorcery.")

Flying

When Windscouter attacks or blocks, return it to its owner's hand at end of combat. (Return it only if it's on the battlefield.)