MTG Boros Aggro Deck by Edel

Valiant — Whenever this creature becomes the target of a spell or ability you control for the first time each turn, put a +1/+1 counter on it. When this creature dies, it deals damage equal to its power to each opponent.

Whenever Kemba or another Cat you control enters, attach up to one target Equipment you control to that creature. Equipped creatures you control get +1/+1. {3}{W}{W}: Create a 2/2 white Cat creature token.

Trample Whenever Jor Kadeen attacks, it gets +X/+X until end of turn, where X is the number of equipped creatures you control. Then if Jor Kadeen's power is 4 or greater, draw a card.

Menace Equipment spells you cast cost {1} less to cast. Activated abilities of Equipment you control that target this creature cost {1} less to activate.

Other Mice you control get +1/+1. When Mabel enters, create Cragflame, a legendary colorless Equipment artifact token with "Equipped creature gets +1/+1 and has vigilance, trample, and haste" and equip {2}.

When Astor enters, look at the top seven cards of your library. You may reveal an Equipment or Vehicle card from among them and put it into your hand. Put the rest on the bottom of your library in a random order. Equipment you control have equip {1}. Vehicles you control have crew 1.

Equipped creature gets +1/+0 and has haste and ward {1}. (Whenever it becomes the target of a spell or ability an opponent controls, counter it unless that player pays {1}.) Equip {1}

Flash (You may cast this spell any time you could cast an instant.) When this Equipment enters, attach it to target creature you control. That creature gains hexproof and indestructible until end of turn. Equipped creature gets +2/+0 and has flying. Equip {3}{W} ({3}{W}: Attach to target creature you control. Equip only as a sorcery.)

For Mirrodin! (When this Equipment enters, create a 2/2 red Rebel creature token, then attach this to it.) Equip abilities you activate of other Equipment cost {1} less to activate. Equipped creature has double strike. Equip {3}{R}{W}

If this card is in your opening hand, you may begin the game with it on the battlefield. Equipped creature gets +1/+1 and has double strike and trample. Equip {3} ({3}: Attach to target creature you control. Equip only as a sorcery.)

(Gain the next level as a sorcery to add its ability.) When this Class enters, create a colorless Equipment artifact token named Sword with "Equipped creature gets +1/+1" and equip {2}. {2}{R}: Level 2 At the beginning of combat on your turn, attach target Equipment you control to up to one target creature you control. {3}{R}: Level 3 During your turn, equipped creatures you control have double strike and haste.

({T}: Add {W}.)

({T}: Add {R}.)

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

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

As this land enters, choose a creature type. {T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can't be countered.

{T}: Add {C}. {T}: Add one mana of any color. Activate only if this land entered this turn. {3}, {T}: Create a 1/1 colorless Phyrexian Mite artifact creature token with toxic 1 and "This token can't block." (Players dealt combat damage by it also get a poison counter.)