Sonic the Hedgehog, Blue Blur

Flash, haste, first strike
Directly after the first card you draw each turn,
flip a coin. If heads, Sonic the Hedgehog, Blue
Blur can't be blocked this turn.
Each time Sonic the Hedgehog, Blue Blur deals
damage to a player, create 2 ring counters.
{t}, remove 10 ring counters from Sonic the
Hedgehog, Blue Blur: place a double strike, reach,
deathtouch, or +1/+1 counter on Sonic the
Hedgehog, Blue Blur.