Name:Jetfire, Ingenious Scientist
ManaCost:4 U
Types:Legendary Artifact Creature Robot
PT:3/4
K:More Than Meets the Eye:3 U
K:Flying
A:AB$ Mana | Cost$ RemoveAnyCounter<X1+/P1P1/Artifact.YouCtrl/among artifacts you control> | XMin$ 1 | ValidTgts$ Player | Produced$ C | Amount$ X | AmountDesc$ for each counter removed | RestrictValid$ CantCastNonArtifactSpells | SubAbility$ DBConvert | SpellDescription$ Target player adds that much {C}. This mana can't be spent to cast nonartifact spells.
SVar:DBConvert:DB$ SetState | Mode$ Transform | StackDescription$ SpellDescription | SpellDescription$ Convert NICKNAME.
SVar:X:Count$xPaid
AI:RemoveDeck:All
DeckHints:Ability$Counters & Keyword$Adapt|Modular
AlternateMode:DoubleFaced
Oracle:More Than Meets the Eye {3}{U} (You may cast this card converted for {3}{U}.)\nFlying\nRemove one or more +1/+1 counters from among artifacts you control: Target player adds that much {C}. This mana can't be spent to cast nonartifact spells. Convert Jetfire.

ALTERNATE

Name:Jetfire, Air Guardian
ManaCost:no cost
Colors:blue
Types:Legendary Artifact Vehicle
PT:3/4
K:Living metal
K:Flying
A:AB$ SetState | Cost$ U U U | Mode$ Transform | SubAbility$ DBAdapt | StackDescription$ Convert NICKNAME, | SpellDescription$ Convert NICKNAME, then adapt 3. (If it has no +1/+1 counters on it, put three +1/+1 counters on it.)
SVar:DBAdapt:DB$ PutCounter | Adapt$ True | CounterNum$ 3 | CounterType$ P1P1 | StackDescription$ then adapt 3.
DeckHas:Ability$Counters
Oracle:Living metal (As long as it's your turn, this Vehicle is also a creature.)\nFlying\n{U}{U}{U}: Convert Jetfire, then adapt 3. (If it has no +1/+1 counters on it, put three +1/+1 counters on it.)
