Combine it with ETB triggers, combat damage abilities, or sacrifice synergies to squeeze out maximum value
These Mob Justice style cards are niche cards, though, especially those that connect with specific creature types
1RG: For each life target opponent lost this turn, put that many +1/+1 counters on Gruul Spy
So while some decks might struggle to produce a big payoff from an X spell, green strategies are often well suited to produce lots of mana in a short amount of time, allowing cards like Invasion of Ikoria to suddenly apply pressure with whatever creature is going to be the best solution to a given situation
Use a template from a real Magic card to ensure that the size and placement of the artwork and text are accurate
Players can't get counters