In a deck with an abundance of low-costed creatures, as red often has, it isn't too hard to find one goblin token or construct creature to throw in the bin for the mana
Don't forget about the clues and lessons that are core to the set, and of course, the legendary characters Appa, Steadfast Guardian, Wan Shi Tong, Librarian and The Lion-Turtle
So, just cracking boxes on release weekend isn't enough
However, Liliana, the Last Hope pairs perfectly with Grim Flayer in this situation by shrinking the Sylvan Advocate
Overlord of the Balemurk Overlord of the Balemurk is a nice value and self-mill card that has seen play in many Magic formats, from Standard to Modern
Searching for a threat or land is fine with no info