Iona, Shield of Emeria [Modern Masters 2015] SPA Serafin del alba Cogwork Tracker attacks each combat

Cogwork Tracker attacks each combat if able

When Dreamcaller Siren enters the battlefield

(Do both if {U}{B} was spent

Set: Zendikar Type: Creature — Kraken Common Cost: {U} A spike and a maul are needed to crack their shells

you may pay {1} any time you could cast an instant

Iona, Shield of Emeria [Modern Masters 2015] SPA Serafin del alba Cogwork Tracker attacks each combatSet: Modern Masters 2015 Type: Legendary Creature Angel Mythic Cost: {6}{W}{W}{W} Flying As Iona, Shield of Emeria enters the battlefield, choose a color. Your opponents can't cast spells of the chosen color. No more shall the righteous cower before evil.