Mordred Tide (Red)

Until end of turn, if you would create one or more Runechant tokens, instead create that many plus 1.

Go again

With each step, the tide draws in, drowning the world in shadow.

Rulings

From the Arcane Rising release notes

An additional one Runechant is created for the entire effect creating Runechants. For example if you were to make three Runechant tokens from a single effect, it would instead create four.
Multiple Mordred Tide effects will result in that many additional Runechants being created.
If playing Mordred Tide would trigger Viserai’s ability, it would not create an additional Runechant as Mordred Tide would not have resolved by the time Viserai’s ability has.

Keyword notes

Go again - Go again allows multiple actions to be played in a turn when usually playing an action with use up your action point, and therefore end your turn. A card with go again gives the controller of that card or activated ability 1 action point when it resolves.

When an action with go again resolves, its controller gains 1 action point.
Multiple instances of go again on the same card or activated ability do not stack. If a card or activated ability has multiple instances of go again when it resolves its controller gains 1 action point only.
If an action with go again does not resolve, its controller does not gain 1 action point.
You cannot reveal a card with no to Belittle. The card must have a value to its power that is 3 or less. (0 is a value)