Infernal Charge

Sacrifice any number of creatures you control.
Target creature gets +X/+0 until end of turn,
where X is the greatest power and/or toughness
among creatures sacrificed this way. If two or
more creatures were sacrificed this way, the
targeted creature also gains indestructible until
end of turn. If four or more creatures were sacrificed this way, all creatures able to block the targeted creature this turn do so.
Flashback {b}{r}