2020-06-01 If you reveal a companion outside the game, for as long as it remains there, you may pay any time you could cast a sorcery (that is, you have priority during your main phase and the stack is empty)
Flash creatures either function as one-for-one removal spells (Hired Blade), as two-for-one removal spells (Sentinels of Glen Elendra is better at surviving combat than Ashcoat Bear), and as flexible curve-fillers (Cloaked Siren lets you hold up interaction and have a threat if you dont need to use it)
You do get an attacker that can trigger saboteur abilities with consistency
It gives them control decks board presence, either as a blocker against an aggressive deck or a beat stick in a game theyve already taken control of
You can make a giant 7/7 Construct with Urza, Lord High Artificer or with Simulacrum Synthesizer and slowly work towards your goal
Kaya lets the mother deal with her kin-slaying son as she sees fit