Chain

A chain is formed when one player activates a card effect and his/her opponent counterattacks with an effect of his/her own. For example:

Player 1 plays "Raigeki." Player 2 counters with "Magic Jammer." Player 1 counters with "Seven Tools of the Bandit."

A chain is resolved starting with the last card played and working backward. For example:

Player 1's "Seven Tools of the Bandit" negates Player 2's "Magic Jammer." "Magic Jammer" is negated and therefore ignored, so the chain ends with all three cards going to the graveyard and "Raigeki"'s effect taking place.