If that creature is black, Helm of the Ghastlord grants it +1/+1 and Whenever this creature deals damage to an opponent, that player discards a card
Infernos power has to become exactly 20 for the trigger to happen, so if an opponent foolishly stacks a bunch of firebreathing triggers and you have a pump spell in hand, you can wait until Inferno hits around 18-19 power, pump it to 20 or above, and make it miss the damage altogether
Other Factors Other factors can also play a role in determining the Magic: The Gathering card value
while we still have Black Market Connections and Revel in Riches, the mono-colored color identity really hurts this strategy, and Plums Treasure production is inconsistent due to the requirements of an artifact in the graveyard and keeping a 2/2 attacking
Arachne, Psionic Weaver Arachne, Psionic Weaver taxes opponents by making chosen card types cost more, while it also peeks at their hand