If Do-It-Yourself Seraph leaves the battlefield, it loses any text boxes it gained. If it returns to the battlefield, it will be a new object and won't have those text boxes, either.
2018-01-19
wotc
If Do-It-Yourself Seraph has the text box of another card, it has all the abilities and flavor text of that card.
2018-01-19
wotc
If Do-It-Yourself Seraph has abilities that contradict one another, the most recently added one wins. For example, if Do-It-Yourself Seraph has the text boxes of both Beast of Burden (power and toughness equal to the number of creatures on the battlefield) and Psychosis Crawler (power and toughness equal to the number of cards in your hand). Do-It-Yourself Seraph's power and toughness would be defined by the text box added most recently.
2018-01-19
wotc
If anything cares about the text of Do-It-Yourself Seraph, consider all of its text boxes as if they were one.
Format Legality
Standard
Not Legal
Future
Not Legal
Historic
Not Legal
Timeless
Not Legal
Gladiator
Not Legal
Pioneer
Not Legal
Modern
Not Legal
Legacy
Not Legal
Pauper
Not Legal
Vintage
Not Legal
Penny
Not Legal
Commander
Not Legal
Oathbreaker
Not Legal
Standardbrawl
Not Legal
Brawl
Not Legal
Alchemy
Not Legal
Paupercommander
Not Legal
Duel
Not Legal
Oldschool
Not Legal
Premodern
Not Legal
Predh
Not Legal
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