Trample

Whenever Primeval Herald enters the battlefield or attacks, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

, Pay 1 life: Prevent all damage that would be dealt to you this turn by a source of your choice that shares a color with the mana spent on this activation cost. <I>(Colorless mana prevents no damage.)</I>

, , Sacrifice a creature: Search your library for a creature card that shares a creature type with the sacrificed creature and has mana value equal to 1 plus that creature's mana value. Put that card onto the battlefield, then shuffle. Activate only as a sorcery.

Trample

Whenever one or more creatures you control with trample deal combat damage to a player, create an X/X green Dinosaur Beast creature token with trample, where X is the amount of damage those creatures dealt to that player.

Whenever you cast an instant or sorcery spell, you may tap two untapped creatures you control. If you do, draw a card.

: Creatures you control get +1/+1 and gain vigilance until end of turn.

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)

At the beginning of your upkeep, you may search your library for a Rat card, reveal it, put it into your hand, then shuffle.

Devour 3 (As this enters the battlefield, you may sacrifice any number of creatures. This creature enters the battlefield with three times that many +1/+1 counters on it.)

When Ravenous Gigantotherium enters the battlefield, it deals X damage divided as you choose among up to X target creatures, where X is its power. Each of those creatures deals damage equal to its power to Ravenous Gigantotherium.

, : Return target creature with a counter on it to its owner's hand.

Bargain (You may sacrifice an artifact, enchantment, or token as you cast this spell.)

Flying, haste

When Realm-Scorcher Hellkite enters the battlefield, if it was bargained, add four mana in any combination of colors.

: Realm-Scorcher Hellkite deals 1 damage to any target.

Haste

Red Herring attacks each combat if able.

, Sacrifice Red Herring: Draw a card.

Backup 1 (When this creature enters the battlefield, put a +1/+1 counter on target creature. If that's another creature, it gains the following ability until end of turn.)

First strike

Undergrowth — Rhizome Lurcher enters the battlefield with a number of +1/+1 counters on it equal to the number of creature cards in your graveyard.

Haste

When River Herald Scout enters the battlefield, 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.)

Flying

At the beginning of your upkeep, you may pay . If you don't, tap Rohgahh of Kher Keep and all creatures named Kobolds of Kher Keep, then an opponent gains control of them.

Creatures you control named Kobolds of Kher Keep get +2/+2.

Whenever you cast a legendary spell, untap Rona, Herald of Invasion.

: Draw a card, then discard a card.

: Transform Rona. Activate only as a sorcery. ( can be paid with either or 2 life.)

Flying

Whenever a player casts a spell, they lose 1 life for each spell they've cast this turn.

Choose two target creatures controlled by different players. Return those creatures to their owners' hands.

Sacrifice an artifact: Regenerate Rusted Slasher.

, : Look at the top card of target player's library. If it has an Agents of S.N.E.A.K. watermark, you may reveal it and put it into your hand. Otherwise, put it on the top or bottom of its owner's library.

As an additional cost to cast this spell, reveal a Vampire card from your hand or pay .

Flying, lifelink

Whenever a creature you control deals combat damage to a player, add that much . Until end of turn, you don't lose this mana as steps and phases end.

Salvage Slasher gets +1/+0 for each artifact card in your graveyard.

Whenever Samite Herbalist becomes tapped, you gain 1 life and scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

First strike

Cycling (, Discard this card: Draw a card.)

When you cycle Sanctuary Smasher, put a first strike counter on target creature you control.

Mutate (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)

Trample

Whenever this creature mutates, destroy target noncreature permanent. Its controller creates a 3/3 green Beast creature token.

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.)

: Scornful Aether-Lich gains fear and vigilance until end of turn. (Attacking doesn't cause it to tap, and it can't be blocked except by artifact creatures and/or black creatures.)

Mutate (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)

Flash

Whenever this creature deals combat damage to a player, draw a card.

Constellation — Whenever an enchantment enters the battlefield under your control, Setessan Skirmisher gets +1/+1 until end of turn.

, Sacrifice a creature: Each other player sacrifices a creature.

, Sacrifice an artifact: Each other player sacrifices an artifact.

, Sacrifice an enchantment: Each other player sacrifices an enchantment.

Flying

When Shepherd of Heroes enters the battlefield, you gain 2 life for each creature in your party. (Your party consists of up to one each of Cleric, Rogue, Warrior, and Wizard.)

Flying, vigilance

When Shepherd of the Clouds enters the battlefield, return target permanent card with mana value 3 or less from your graveyard to your hand. Return that card to the battlefield instead if you control a Mount.

Sheriff of Safe Passage enters the battlefield with a +1/+1 counter on it plus an additional +1/+1 counter on it for each other creature you control.

Plot (You may pay and exile this card from your hand. Cast it as a sorcery on a later turn without paying its mana cost. Plot only as a sorcery.)

Defender

Whenever Shield Sphere blocks, put a -0/-1 counter on it.

Destroy target non-outlaw creature. (Assassins, Mercenaries, Pirates, Rogues, and Warlocks are outlaws. Everyone else is fair game.)

Whenever you cast a spell that's both green and blue, Shorecrasher Mimic has base power and toughness 5/3 until end of turn and gains trample until end of turn.

Flying

You and Humans you control have hexproof.

, Exile a card from your graveyard: Create a 1/1 white Human Soldier creature token.

Reach (This creature can block creatures with flying.)

As Silhana Starfletcher enters the battlefield, choose a color.

: Add one mana of the chosen color.

Sisay, Weatherlight Captain gets +1/+1 for each color among other legendary permanents you control.

: Search your library for a legendary permanent card with mana value less than Sisay's power, put that card onto the battlefield, then shuffle.

Devour 1 (As this enters the battlefield, you may sacrifice any number of creatures. This creature enters the battlefield with that many +1/+1 counters on it.)

When Skullmulcher enters the battlefield, draw a card for each creature it devoured.

Ninjutsu (, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)

Whenever Skullsnatcher deals combat damage to a player, exile up to two target cards from that player's graveyard.

Reach

When Skyfisher Spider enters the battlefield, you may sacrifice another creature. When you do, destroy target nonland permanent.

When Skyfisher Spider dies, you may gain 1 life for each creature card in your graveyard. If you do, exile Skyfisher Spider from your graveyard.

Flash

This spell can't be countered.

Reach, protection from blue

When Skyship Weatherlight enters the battlefield, search your library for any number of artifact and/or creature cards, exile them, then shuffle.

, : Choose a card at random that was exiled with Skyship Weatherlight. Put that card into its owner's hand.

, : Search your library for an Elf permanent card, put it onto the battlefield, then shuffle.

( can be paid with either or 2 life.)

Haste

: Add .