Boros Aggro

Creature — Human Monk

Haste Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

P/T: 1/2

Enchantment — Saga // Enchantment Creature — Human Shaman

Creature — Phoenix

Flying, haste This creature can't block. Whenever you attack with three or more creatures, you may pay {R}{R}. If you do, return this card from your graveyard to the battlefield tapped and attacking with a +1/+1 counter on it.

P/T: 1/1

Legendary Creature — Human Artificer

Haste Feldon can't block. Whenever Feldon is dealt damage, exile that many cards from the top of your library. Choose one of them. Until the end of your next turn, you may play that card.

P/T: 2/2

Artifact Creature — Equipment Rabbit

Haste Equipped creature gets +1/+1 and has haste. Reconfigure {R} ({R}: Attach to target creature you control; or unattach from a creature. Reconfigure only as a sorcery. While attached, this isn't a creature.)

P/T: 1/1

Legendary Creature — Kor Artificer

Affinity for Equipment (This spell costs {1} less to cast for each Equipment you control.) Whenever an equipped creature you control attacks, exile the top card of your library. You may play that card this turn. You may cast Equipment spells this way without paying their mana costs.

P/T: 5/4

Creature — Devil Citizen

Alliance — Whenever another creature you control enters, this creature deals 1 damage to each opponent.

P/T: 3/2

Instant

Play with Fire deals 2 damage to any target. If a player is dealt damage this way, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Instant

Lightning Strike deals 3 damage to any target.

Enchantment — Saga

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — Exile the top four cards of your library. Until the end of your next turn, you may play those cards. II, III — Whenever you cast a spell this turn, put a +1/+1 counter on target creature you control.

Land

{T}: Add {C}. {T}: Add {R} or {W}. This land deals 1 damage to you.

Land

This land enters tapped unless you control two or fewer other lands. {T}: Add {R} or {W}.

Land — Mountain Plains

({T}: Add {R} or {W}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

Basic Land — Mountain

({T}: Add {R}.)

Basic Land — Plains

({T}: Add {W}.)