I have an 8 might unit with tank and three 6 might units at the same battlefield, and an opponent's elder dragon attacks. Does he have to assign full damage to all might to each one unit before moving to another unit, or can he just assign one to all units and kill them?

Question

Accepted Answer

Because you control **Elder Dragon**, the rules for assigning combat damage are modified.

**Yes, your opponent can assign just 1 damage to each of your units to kill them.**

Here is the breakdown of why this works, based on the official rules and FAQs:

*   **Elder Dragon’s Ability:** Elder Dragon’s ability ("Any amount of your damage is enough to kill enemy units") changes the definition of "lethal damage" for any damage you deal. Normally, lethal damage must equal or exceed a unit's Might (Rule 460.2.c.2). With Elder Dragon in play, 1 damage is considered lethal for your combat damage.
*   **Assignment Rules:** According to **Rule 460.2.c.3**, "Units must have lethal damage assigned to them in full before damage is assigned to a different Unit." Because Elder Dragon makes 1 damage "lethal," once the opponent assigns 1 damage to one of your units, they have satisfied the requirement to assign "lethal damage" to that unit and may move on to the next one (as confirmed by **RiftJudge FAQ #8762**).
*   **Tank Interaction:** Your unit with **Tank** ("I must be assigned combat damage first") must still be assigned lethal damage before your other units (Rule 815.1.b). However, since 1 damage is now lethal, the opponent only needs to assign that 1 damage to your Tank unit first. Once that unit has received its "lethal" 1 damage, they may then proceed to assign 1 damage to each of your other units.

In summary, as long as your opponent has enough total Might to assign 1 damage to every unit they wish to kill, they can distribute their damage one-by-one to clear the board, fulfilling the Tank requirement first.