MTG UBRG Aggro Deck by Dahl

Flying, haste This creature enters with X +1/+1 counters on it.

When Sarkhan enters, you may behold a Dragon. If you do, create a Treasure token. (To behold a Dragon, choose a Dragon you control or reveal a Dragon card from your hand.) Whenever a Dragon you control enters, put a +1/+1 counter on Sarkhan. Until end of turn, Sarkhan becomes a Dragon in addition to its other types and gains flying.

Flying Ward—Discard a card.

Flying Whenever this creature or another Dragon you control enters, you gain 3 life.

Flying, haste Whenever this creature deals combat damage to a player, you gain 1 life and draw a card.

{T}: Add one mana of any color. Activate only if you control a Dragon.

{T}: Add {R}. If that mana is spent on a Dragon creature spell, it gains haste until end of turn.

When this enchantment enters, draw two cards, then discard a card. When a Dragon you control enters, return this enchantment to its owner's hand.

As an additional cost to cast this spell, you may behold a Dragon. (You may choose a Dragon you control or reveal a Dragon card from your hand.) Counter target spell unless its controller pays {2}. If a Dragon was beheld, counter that spell unless its controller pays {4} instead.

({T}: Add {U}.)

({T}: Add {B}.)

({T}: Add {R}.)

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. Spend this mana only to cast a Dragon spell or an Omen spell. {4}, {T}, Sacrifice this land: Search your library for a Dragon card, reveal it, put it into your hand, then shuffle.