Effects that increase or reduce the cost to cast a Trap will apply to whichever cost you chose to pay
The rules around cumulative upkeep require you, in your upkeep (naturally) to put an age counter on the permanent and then pay the cumulative upkeep cost once for each age counter on the permanent
Energy: 25x Psychic Energy 1x Double Colorless Energy Pokemon: 3x Slowpoke (LV 9) 2x Slowbro (LV 26) 4x Drowzee (LV 12) 3x Hypno (LV 36) 2x Mr
Using the Square-Type and Fuel Cell remaining on the board, summon Chaos Angel of Light and banish something
You can combine that with Rakdos, Lord of Riots, a famous commander that lowers the cost of creature spells, also based on life loss, to make a powerful combo
Greater Good Turning a creature into cards is an incredible deal, especially when looking at some monstrous green creatures like Ghalta, Primal Hunger, Worldspine Wurm, and Yargle and Multani