Whos that champion!
200
Shen
Each player kills one of their units.
Cull The Weak
Non ON or SIG origins
Kai'sa
Blitzcrank, Impassive
Rare
Can I use Heart of the Dark Ice during the opponent's turn?
No
400
Dr. Mundo
Swap the Might of two units at the same battlefield this turn.
Switcheroo
Sig Spiritforged
Ahri
Charm
Common
When I activate the fourth spell card, does Jhin's effect activate immediately, or can I choose when to activate it?
This is a triggered ability and it happens immediately after the triggering event occurs.
600
Illaoi
Return all units and gear to their owners' hands.
Downwell
Discord
Common
Will Akali be able to be chosen by ruin Rex deathknell if they were in the same combat together?
Assuming Rex dies during combat, yes, Akali remains in combat and is targetable until the combat ends. That would be after Deathknells resulting from combat damage are resolved.
800
Karma
Banish a unit, then its owner plays it to the same location, ignoring its cost.
Temporal Breach
Non ON or SIG vendetta
Ahri
Epic
Does Astral Heron reduce flow cost? For example, to Shurikan Flip
Yes, astral heron is a generic reduction. Which will apply towards alternate costs and or printed costs.
1000
Bard
Give a friendly unit +1 this turn and [Stun] an enemy unit at its location.
Heroic Charge
Unleashed Non Sig
Baron
Tomb Raider Barbara
Uncommon
I play Jhin's legend. I have 12 runes. If I play Time Warp, which is my 4th spell, when I resolve the Jhin's legend ability, can I have over 12 rune or I have 2 floating energies and 2 powers ?
Time warp Will finalise then banish itself making jins legend ability unable to banish as it gone from the chain at resolution