Start by reading the top row and go over their critical number
Because of these, its prudent to look into what each sites fees are and how to mitigate these
(This includes by the ward ability.) Destroy target creature or planeswalker with mana value 3 or less
And it can vary from (e.g., 14pt) or millimeters (e.g., 0.2mm)
Magic is dead. The same thing happened with the energy counters from Kaladesh , the double-faced cards from Innistrad , phyrexian mana, planeswalkers, border changes, the introduction of Standard, and even the introduction of the 60-card deck limit
The +1/+1 counters theme I ran, which had Retribution of the Ancients, was a blast to play with