Arashinomon, First Yokozuna

Yorikiri 4 (Whenever this creature becomes blocked,
it gets +4/+0 and trample until end of turn.)
{x}{w}{w}, {t}: Each creature you control gets
yorikiri X and vigilance until end of turn.
Channel—{x}{w}, discard Arashinomon, First
Yokozuna: target creature you control gets
yorikiri X until end of turn, where X is the
amount of mana spent to channel Arashinomon
times two.