Advanced format ruling
Arcana Force XIV - Temperance
Card effect (current official text)During damage calculation, in either player's turn: You can discard this card; you take no Battle Damage from that battle. When this card is Summoned: Toss a coin and apply this effect. The effect lasts while this card is face-up on the field.
● Heads: Halve all Battle Damage you take.
● Tails: Halve all Battle Damage your opponent takes.
Current rulings for this card are maintained by Konami.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Advanced forum — sourced change requests get reviewed.