Generally, whenever you need a mono-color deck to do something that its color can't really do, try this: use artifacts and other colorless cards to do stuff your color can't (try searches like colorless + "destroy" + "permanent")
Sure, they are card disadvantage, but they are allowed to stay, and theres something to be said for not having a threat profile, and let the others blast each other, and then rise above the masses
Youve got to spend at least half of it on instants, flash creatures, and activated abilities
You can obtain the Sabrina (2-Stars rarity) card by opening Genetic Apex: Charizard from Genetic Apex set
Crusader of Odric Rarity: Common TYPE: Creature SUBTYPE: Human Soldier CMC: 3 Mana cost: USD: $0.10 EUR: 0.05 TIX: 0.06 EDHREC RANK: 12247 (*/*) Crusader of Odric's power and toughness are each equal to the number of creatures you control
It features sellers from all over the world, making it a great resource for hard-to-find cards