This is especially true for the older cards, as there were very few people counting and opening thousands of booster packs trying to determine the rate
Legendary Planeswalker - Tezzeret Commander (CTRL to add secondary) Drain Marionette Apprentice Fabricate 1 (When this creature enters, put a +1/+1 counter on it or create a 1/1 colorless Servo artifact creature token.) Whenever another creature or artifact you control is put into a graveyard from the battlefield, each opponent loses 1 life
I chose The one other card I wanted to talk about was Time Spiral
Brawl Legal Vintage Legal Timeless Legal Commander Legal Pauper Legal Oathbreaker Legal Penny Legal Toolbox Buy This Card Notes and Rules Information for Sultai Scavenger: Delve doesn't change a spell's mana cost or mana value
I would not recommend stocking up on low pop vintage cards with huge PSA 10 premiums, as the pop reports can (and do) increase regularly
If you arent sure of whether to include Fabricate in your deck, my general rule of thumb is to see if it meets at least one of these criteria: Are there approximately 10 valid targets to search for