Tarkir: Dragonstorm

Mardu Devotee | Creature | Human Scout | When this creature enters, scry 2. (Look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.) {1}: Add {R}, {W}, or {B}. Activate only once each turn. | Lorenzo Mastroianni

Iridescent Tiger | Creature | Cat | When this creature enters, if you cast it, add {W}{U}{B}{R}{G}. | Fajareka Setiawan

Jeskai Devotee | Creature | Orc Monk | Flurry — Whenever you cast your second spell each turn, this creature gets +1/+1 until end of turn. {1}: Add {U}, {R}, or {W}. Activate only once each turn. | Xavier Ribeiro

Cori Mountain Stalwart | Creature | Human Monk | Flurry — Whenever you cast your second spell each turn, this creature deals 2 damage to each opponent and you gain 2 life. | Josiah "Jo" Cameron

Flamehold Grappler | Creature | Human Monk | First strike When this creature enters, copy the next spell you cast this turn when you cast it. You may choose new targets for the copy. (A copy of a permanent spell becomes a token.) | Wayne Wu

Jeskai Brushmaster | Creature | Orc Monk | Double strike Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) | Nino Vecia

Jeskai Shrinekeeper | Creature | Dragon | Flying, haste Whenever this creature deals combat damage to a player, you gain 1 life and draw a card. | Andrew Mar

Monastery Messenger | Creature | Bird Scout | Flying, vigilance When this creature enters, put up to one target noncreature, nonland card from your graveyard on top of your library. | Forrest Imel

Narset, Jeskai Waymaster | Legendary Creature | Human Monk | At the beginning of your end step, you may discard your hand. If you do, draw cards equal to the number of spells you've cast this turn. | Randy Vargas

Shiko, Paragon of the Way | Legendary Creature | Spirit Dragon | Flying, vigilance When Shiko enters, exile target nonland card with mana value 3 or less from your graveyard. Copy it, then you may cast the copy without paying its mana cost. (A copy of a permanent spell becomes a token.) | Victor Adame Minguez

Bone-Cairn Butcher | Creature | Demon | Mobilize 2 (Whenever this creature attacks, create two tapped and attacking 1/1 red Warrior creature tokens. Sacrifice them at the beginning of the next end step.) Attacking tokens you control have deathtouch. | David Palumbo

Mardu Siegebreaker | Creature | Human Warrior | Deathtouch, haste When this creature enters, exile up to one other target creature you control until this creature leaves the battlefield. Whenever this creature attacks, for each opponent, create a tapped token that's a copy of the exiled card attacking that opponent. At the beginning of your end step, sacrifice those tokens. | Chris Seaman

Neriv, Heart of the Storm | Legendary Creature | Spirit Dragon | Flying If a creature you control that entered this turn would deal damage, it deals twice that much damage instead. | Victor Adame Minguez

Reigning Victor | Creature | Orc Warrior | Mobilize 1 (Whenever this creature attacks, create a tapped and attacking 1/1 red Warrior creature token. Sacrifice it at the beginning of the next end step.) When this creature enters, target creature gets +1/+0 and gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.) | Warren Mahy

Sonic Shrieker | Creature | Dragon | Flying When this creature enters, it deals 2 damage to any target and you gain 2 life. If a player is dealt damage this way, they discard a card. | Jason A. Engle

Zurgo, Thunder's Decree | Legendary Creature | Orc Warrior | Mobilize 2 (Whenever this creature attacks, create two tapped and attacking 1/1 red Warrior creature tokens. Sacrifice them at the beginning of the next end step.) During your end step, Warrior tokens you control have "This token can't be sacrificed." | Steve Prescott