Trickbind [Time Spiral] Elder Dragon Five rivers encircle Theros

Five rivers encircle Theros

At the beginning of the end step

Set: Aether Revolt Prerelease Promos Type: Artifact Creature — Construct Rarity: Rare Cost: {X}{X} Walking Ballista enters the battlefield with X +1/+1 counters on it

Set: Dominaria Prerelease Promos Type: Legendary Artifact Rarity: Mythic Cost: {0} {T}: Add one mana of any color among legendary creatures and planeswalkers you control

Trickbind [Time Spiral] Elder Dragon Five rivers encircle TherosSet: Time Spiral Type: Instant Rarity: Rare Cost: {1}{U} Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.) Counter target activated or triggered ability. If a permanent's ability is countered this way, activated abilities of that permanent can't be activated this turn. (Mana abilities can't be targeted.)