Talk:Counter/@comment-34817248-20190106091506/@comment-26684750-20190106100816

To elaborate more:

Counters are not exactly usable whenever you want, but rather during any time you could use a card normally + any play timings (might want to read the detailed rules for the lists of those occurences).

"Chain" is an unofficial term which describes two cards/abilities being used consecutively, and thus forming a chain. As said above, each player can only have one card/ability per chain, and must allow the chain to resolve (the effects of the cards/abilities happen) before being able to create another chain, or use another card/ability.