So i have a new idea which has expanded from the mtg style card game of my old idea
same combat type of mechanic, you need enough power to damage your opponents card's hp. example i have a monster with 5 power and 3 hearts, my opponent has 3 power with 2 hearts. since my card's power is stronger, the enemy card loses 1 heart. There will be ways to increase the defending card's power with action cards or something but thats about it. now the new mechanic is using a grid to move your cards around (unknown size of the grid right now) once one of your card reaches to the end of the opponent's side of the grid, that card is destroyed and will damage the player's life force or something like that. the player will have like 20 points of life or something and each card has like a self destruct damage lets say one of my cards i killed to damage opponent has a destruct damage of 4, so opponent loses 4 points. So here is where the shared resource comes in. onto the side of the grid is a point slider ranging from 1 to 10 then to 10 to 1. the first player begins on the left side of the slider. on your turn you can summon as many monsters as you want but each monster comes with a summon cost so when you play a monster with a cost of 3, you move the counter to 3 points, moving the monster also comes with a cost, such as a move cost of 5, you can move up to 5 spaces but also u have to move the counter up by 5. after your turn ends your opponent can summon and move by the number that the counter is on. So example, if you want to go all out you, can summon high-cost monsters and move etc but doing so will also give your opponent the same opportunity and when they summon and move monsters the counter will be pushed back to the left again