Demonic Tutor and Unholy Strength are the only two I know of.
Unholy strength only features the pentagram in the Alpha, Beta, Unlimited and Revised printings. The 4th Edition printing removed it from the background, and subsequent printings featured different art.
There are over 20,000 different cards in Magic: The Gathering.
In a game of Magic: The Gathering, you start with seven cards.
A Magic: The Gathering deck typically consists of 60 cards.
A lot
41
In Magic: The Gathering, you typically draw one card at the beginning of your turn.
A Magic: The Gathering deck typically includes 60 cards, with a mix of creatures, spells, and other cards.
As of 2021, there are over 20,000 Magic: The Gathering cards that have been created.
Either 8 or 15 cards.
A typical Magic: The Gathering deck contains 60 cards.
In a game of Magic: The Gathering, you can play as many planeswalker cards as you want, as long as you can afford to cast them and they don't have the same subtype.
Single cards that represent a creature (token) there are currently 199 that I am aware of.