The primary theme of the deck is "Growth" (+1/+1 counters)
Every land drop pumps a creature, and first strike makes it hard to take down your larger creatures
Persuasive Interrogators If I can investigate, make five Clues and then play this, all I need is 10 mana to win the game. I think these Persuasive Interrogators have given you Stockholm Syndrome
Veyran gains a +1/+1 counter every time you cast a spell, quickly getting stronger and stronger for each spell you cast, all while doubling your triggered abilities that happen when you cast or copy an instant or sorcery spell.
But you also have the option to crack for singles
Still, the entire point of equipment decks is to win with their assortment of cheap, powerful equipment cards and this card is far from cheap