Cren, Undercity Dreamer

When Cren enters, put a +1/+1 counter on each of up to two target creatures.

: Transform Cren. Activate only as a sorcery.

First strike, haste

: Put a +1/+1 counter on Cren. He gains hexproof and becomes colorless until end of turn.

Whenever you attack, double the number of each kind of counter on each Spider and legendary creature you control.