Use The Coin to create a stronger sequence

What The Coin does

The player going second gets an extra starting card and The Coin. The Coin is a zero-cost spell. It gives one temporary Mana for that turn.

You can play a threat early, fit two actions into one turn, or use an effect that cares about spells. Once you spend The Coin, you lose those later choices.

Plan the follow-up

You have two three-cost minions and no two-cost minion. You could use The Coin to play one on turn two. Then you can play the other on turn three. That gives you two useful turns in a row.

With only one three-cost minion, the same play may leave you with little to do next turn. Saving The Coin might allow a better play later. Check the board and the matchup.

Defense counts too

The Coin can let you remove a threat and play a small minion. It can also get you to a key defense one turn early.

Saving it for a huge turn is not useful if you lose first.

It is still a spell

The Coin can set off effects that react to spells. Think before using it to test a Secret or add to a spell count. Make sure your full turn still has enough Mana.

After a game, compare your Coin play with one other real option. Ask which plan would help most, not which spends it first or last.