RavenousRavenous is a keyword found on some creature cards with in their mana cost. Ravenous represents both a replacement effect and a triggered ability. “Ravenous” means “This permanent enters with X +1/+1 counters on it” and “When this permanent enters, if X is 5 or more, draw a card.” See rule 107.3m. (CR 702.156) (This creature enters with X +1/+1
countersTo counter a spell or ability is to cancel it: remove it from the stack without resolving it. A counter on an object or player is instead a marker that changes characteristics or interacts with rules or abilities; for example, a +1/+1 counter modifies a creature’s power and toughness. (CR 701.6; 122.1) on it. If X is 5 or more, draw a card when it enters.)
Death
FrenzyFrenzy is a triggered ability. “Frenzy N” means “Whenever this creature attacks and isn’t blocked, it gets +N/+0 until end of turn.”
If a creature has multiple instances of frenzy, each triggers separately. (CR 702.68) — When this creature
diesIs put into a graveyard from the battlefield. (CR 700.4),
createTo create one or more tokens with certain characteristics, put the specified number of tokens with the specified characteristics onto the battlefield.
If a replacement effect applies to a token being created, that effect applies before considering any continuous effects that will modify the characteristics of that token. If a replacement effect applies to a token entering the battlefield, that effect applies after considering any continuous effects that will modify the characteristics of that token.
Previously, an effect that created tokens instructed a player to “put [those tokens] onto the battlefield.” Cards that were printed with that text have received errata in the Oracle card reference so they now “create” those tokens. (CR 701.7) a number of 1/1 green Tyranid creature tokens equal to this creature's power.