Archaeon the Everchosen - Najeela, the Blade-Blossom - [Borderless] Secret Lair Drop (SLD) Guild Sacrifice Emergence Zone: You may

Sacrifice Emergence Zone: You may cast spells this turn as though they had flash

and Rafal Wechterowicz (Too Many Skulls)

remove a shield counter from it

We must find another source of mana—one that is growing despite our withering world

you may cast sorcery spells as though they had flash

Archaeon the Everchosen - Najeela, the Blade-Blossom - [Borderless] Secret Lair Drop (SLD) Guild Sacrifice Emergence Zone: You mayWhenever a Warrior attacks, you may have its controller create a 1 1 white Warrior creature token that's tapped and attacking. {W}{U}{B}{R}{G}: Untap all attacking creatures. They gain trample, lifelink, and haste until end of turn. After this phase, there is an additional combat phase. Activate only during combat.