Invasion of Theros // Ephara, Ever-Sheltering

If Ephara enters the battlefield under your control at the same time as other enchantments, its last ability will trigger for each of those other enchantments.

Damage dealt to Ephara is tracked even if Ephara has indestructible. For example, if Ephara is dealt what would be lethal damage and later loses indestructible (perhaps because you lose control of some enchantments), it will be destroyed the next time state-based actions are performed. However, the check for whether a creature dealt damage by a source with deathtouch is destroyed happens only the first time that state-based actions are performed after that damage-dealing event.

If a non-battle permanent that is already on the battlefield become a copy of a Siege, its controller chooses one of their opponents to be that battle’s protector. However, it will most likely be put into its owner’s graveyard because it has no defense counters (see below).

Damage dealt to a battle causes that many defense counters to be removed from it.

A battle’s “defense” is displayed in the bottom right corner of the card. A battle enters the battlefield with that number of defense counters. If another permanent enters the battlefield as a copy of a battle, it also enters with that number of defense counters.

If a battle that’s being attacked somehow stops being a battle, it is removed from combat. Similarly, if its controller changes in the middle of combat, it is removed from combat.