{T}: Add {C}. {3}{U}: Until end of turn, I's Observatory becomes a 1/4 creature. It's still a land. It has menace if {B} was spent to activate this ability, has first strike if {R} was spent, and assigns combat damage equal to its toughness rather than its power if {G} was spent.
{T}: Add {C}. {3}{W}: Until end of turn, Llereaux's Lair becomes a 1/2 creature. It's still a land. It can't be blocked this turn if {U} was spent to activate this ability, has indestructible if {B} was spent, and gets +2/+1 if {R} was spent.
{T}: Add {C}. {T}: Add one mana of any color among planeswalkers you control. {1}, {T}: Put a loyalty counter on target planeswalker that activated a loyalty ability this turn.
“Spark extraction successful. Well, twenty percent successful. We'll need four more.”
{T}: Add {C}. {3}{B}: Until end of turn, Tzhai's Throne becomes a 2/2 creature. It's still a land. It gets +2/+2 if {R} was spent to activate this ability, gets +2/+2 if {G} was spent, and gets +2/+2 if {W} was spent.
Where some rule by fear or might, Emperor Tzhai rules by abundance and awe.