Mono-Black Aggro floods the board with cheap 1-2 mana creatures like Forsaken Miner, Nighthowl Pursuer, and Iridescent Vinelasher, making Pyroclasm's 2 damage to each creature very effective at resetting their board. Full Bore pumps your creature +3/+2, letting it survive combat or push through extra damage, and can even grant trample and haste if you cast that creature for its warp cost. Poison Dart Frog trades favorably with their small aggressive creatures and can even take down bigger threats like Gollum, Riddle Master in combat. We trim slower pump spells for more proactive, board-affecting cards.