There aren't any tutors to remove (though you could put in Demonic, Vampiric, and Grim Tutor if you need to power it up a bit), and the only infinite combos we have are infinite combat steps, which can backfire
#137 Porygon
There are also other types of card covers, such as dark card covers, which cover the back of each card
Lightning Bolt is in similar territory: for one mana, the 3 damage to a creature or to the opponent's face will usually be relevant
7 Moraug, Fury of Akoum Though somewhat mana intensive at six mana, Moraug, Fury of Akoum is among the most aggressive landfall cards in all of Magic, allowing creature decks to deal serious damage in a single turn
Ive got your guide on how to prevent that from happening, but more importantly, on how to fix it