The main mechanic for this deck is the amass orcs mechanic, which allows you to make an orc army token and grow it over time
There's also a handful of other cards that increases power, mostly equipments like Champion's Helm, but most of these bump the power by about 2 and not enough to get most creatures to 7+ power
They won't be legal in the format until then, but for now you can always start planning your deck
Extended-Art Cards You can find 53 rares and 19 mythic rares with extended art in The Brothers' War Collector Boosters
1 The Tabernacle At Pendrell Vale Great Against Creature-Heavy Decks Estimated Value: $2,400 The Tabernacle at Pendrell Vale forces players to pay an upkeep cost of one colorless mana per creature
Decks that want to draw cards with Fact or Fiction are very unlikely to also be able to optimally use a Skullclamp, decks that have the mana to bust out a five or more mana draw spell are similarly unlikely to also want to use the economic but slow Ancestral Visions