one piece card game st21 Trading Starter Deck EX Gear 5 Single Card Common Brook ST21-012 Is ST-21 Worth It? :

No, transforming a creature doesnt remove it from combat , unless its exiled and then brought back like with the flipwalkers

This is a minor bonus with Dungeon Crawler, a moderate bonus with Precipitous Drop, a major bonus with Nadaar, Selfless Paladin, and worthless if you have nothing that cares about completion

This won't affect Phoebe, who presumably still has the one she stole from the original creature

Delaying Solemnity I also use a combo that might get you kicked out of the table if you use it too much

Instead of trying to close out the game as quickly as possible, you would use Life from the Loam to ensure you can keep recurring your Bloodghasts and flashing back your Faithless Looting, while building a sizeable hand size to set up a big Conflagrate either to point at your opponents face or wipe out all of their creatures