Adanossian mage

{x}{t}: Target creature gains vigilance until
end of turn. If you pay {1}: it also gains Haste.
If you pay {2}: it also gains Haste and First
Strike. If you pay {3} and sacrifice Adanossian
Mage: it also gains Haste, First Strike and
Deathtouch. (All of these attributes stay
until end of turn)