A Random Toad

Defender, first strike, hexproof, reach, vigilance
A Random Toad gets +3/+2
until end of turn, where X is another target
creature's power or toughness. He can attack this
turn as though he didn't have defender.
{t}: Create a token that's a copy of target
legendary, noncreature artifact. Exile that token
when A Random Toad leaves the field.
At end of turn, you gain 2 mana. (Only once.)